Giúp mình làm các câu hỏi này nha: (càng nhiều càng tốt!)

1. Tiffany and Ryan deposit some amount in a joint bank account such that total balance remains 500. If  amount deposited by Tiffany and Ryan are plotted as a linear graph on xy plane, find the area between this graph and the coordinate axis.

2.A group of workers is paving a road. If they pave 200m of the road a day, they will need 3 more days. to finish the work. If they pave 240m of the road a day, they will finish the work 2 days in advance. How long is the road, in meter?

3. Mrs. Darlie has a silver ring, a golden ring and a diamond ring. She put them on her left hand. Each ring can be on any of the five fingers. When there are two or three rings on the same finger, if the order in which they are put is different, that couunt as a different way. How many different ways for Lea to put these rings?

4. Let P(x) be a polynomial with degree 3 such that P(1)=3, P(2)=3, P(3)=7, P(4)=21. Find the value of P(5).

Rewrite the sentences using have something done.1. The money was deposited in his bank account by the company.... He had the money deposited in his bank account. .........................2. Sarah’s new fridge will be delivered tomorrow....................................................................................................................3. Tim’s car was serviced last week....................................................................................................................4. Mrs. Scott’s cat was examined by the vet yesterday....................................................................................................................5. Paul’s house will be painted next weekend....................................................................................................................6. Mr. Brown’s book has just been published....................................................................................................................7. Becky’s hair is done every week....................................................................................................................8. Edward’s dinner was cooked by his mother yesterday....................................................................................................................

VOCABULARY ( 16 points) Read and choose ( 10 points) Amazing Boring relaxed bored annoyed interested Surprised Confused proud worried 1. Ryan was _____________ because some students laughed at Olivia. 2. Ryan and Luke thought it was ________________ when the man gave Olivia her necklace. 3. Luke talked about his neighbour. The teacher was _____________ and wanted to know more. 4. I am never ________________ when we talk about social problems because I like to know what people think. 5. I usually do my homework when I get home. Then I feel ____________________ and I can do what I want 6. The game was _______________ so I stopped playing it 7. I was late and Dad was very ________________ 8. Olivia was ___________________ when pizza arrived 9. Dan was at the football match, but Jake wasn’t there. They usually go together. I am _________________ 10.Luke was ___________________ of his idea to order Olivia a special pizza

ai giup minh baai nay voi a dang cần gấp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

        The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been “primed” by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.

        Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.

                   In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

The author of the passage states that the amount of acid produced by the bacteria in your saliva increases _________.

A. with the amount of sweets you eat

B. with the number of times you eat sweets

C. if you eat sweets with your meals 

D. if you eat sticky sweets

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

        The cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been "primed" by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.
        Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.
In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

The author of the passage states that the amount of acid produced by the bacteria in your saliva increases __________.

A. with the amount of sweets you eat

B. with the number of times you eat sweets 

C. if you eat sweets with your meals   

D. if you eat sticky sweet