Use a proportion to solve the problem.The ratio of the width to the length of a picture frame is 8 to 13. If the width of the frame is 9 inches, what is its length?
A. 14.625 inches
B. 22 inches
C. 5.5 inches
D. 17 inches
Answer: A
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Solve the problem.On a test, Sunita has an x percent chance of correctly answering a question for which she has not studied. The chance that she will correctly answer a question for which she has studied is 2x. She is happy to see that both of the first two questions on the test are questions for which she has studied. The chance that she doesn't answer either of these questions correctly is (1 - 2x)2, where x is expressed as a decimal. Multiply this expression.
A. 1 - 4x + 4x2 B. 1 + 4x - 4x2 C. 1 - 2x + 4x2 D. 1 - 4x2
Evaluate the sum.
A. 
B. 
C. 
D. 
Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.tan 570°
A. 
B. -
C. 
D. 
The post office recorded the weights of packages sent on a particular day and used the results to construct a histogram. Use the histogram to solve the problem. 
0-910-1920-2930-39Weight of Package (pounds)How many packages weighed between 20 and 39 pounds?
A. 2 packages B. 11 packages C. 7 packages D. 6 packages