Maths Exam

956 Words Sep 11th, 2015 4 Pages
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| 1. Elsie is making a quilt using quilt blocks like the one in the diagram.

a. How many lines of symmetry are there? Type your answer below.
b. Does the quilt square have rotational symmetry? If so, what is the angle of rotation? Type your answers below.

| | 2. Solve by simulating the problem. You have a 5-question multiple-choice test. Each question has four choices. You don’t know any of the answers. What is the experimental probability that you will guess exactly three out of five questions correctly? Type your answer below using complete sentences. | | 3. Use the diagram below to answer the following questions.
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| | 8. Caitlin had $402 in her bank account. She withdrew $15 each week to pay for a swimming lesson. She now has $237.

a. Write an equation that can be used to find the number of swimming lessons that she paid for.
b. How many swimming lessons did she pay for?
c. At the time she had $237, the cost of a lesson rose to $19. How many lessons can she pay for with her remaining $237? | | 9. Is a triangle with sides of length 6 ft., 21 ft., 23 ft. a right triangle? Explain. | | 10. Identify the number as rational or irrational. Explain. 291.87 | | 11. Is the sequence 5, 9, 15, ... an arithmetic sequence? Explain. Type your answer below. | | 12. Suppose a computer virus begins by infecting 8 computers in the first hour after it is released. Each hour after that, each newly infected computer causes 8 more computers to become infected. The function y = 8x models this situation. Make a table with integer values of x from 1 to 4 in the space below.

| | 13. For the function y=1x, make a table with integer values of x from 0 to 4. Then graph the function (you do not need to submit the graph). Does the graph of show exponential growth, exponential decay, or neither? Explain your thinking. | | _____ 14. Tell whether the sequence 13, 0, 1, -2… is arithmetic, geometric, or neither.

Find the next three terms of the sequence. Type your answer in the blank to the left. A. neither; 7, -20, 61 | |

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