Use a graphing utility to solve the system of equations. Express the solution rounded to two decimal places.
A. x = 0.64, y = 1.89 or (0.64, 1.89)
B. x = 0.48, y = 1.63 or (0.48, 1.63)
C. x = 1.14, y = 0.81 or (1.14, 0.81)
D. x = 0.22, y = 0.98 or (0.22, 0.98)
Answer: A
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The following table shows the running speed R, in feet per second, of animals of length L, in inches. Use the regression line for the data to estimate the running speed of animals that are 11 inches long. L 3.5 6.3 9.4 9.8 R 8.26 15.79 24.02 24.99? ?
A. 13.89 feet per second B. 28.96 feet per second C. 13.88 feet per second D. 28.24 feet per second
Solve the problem.From a distance of x feet to a 120-meter-high radio tower, the angle of elevation is ? degrees. Then 
Use a reciprocal identity to rewrite this formula.
A. 120 sec ?
B. 120 cot ?
C. 
D. 
Find the decimal approximation for the radical. Round the answer to three decimal places.
A. -2.460 B. -2.448 C. -2.478 D. -2.469
Write the expression in standard form.9 + 
+ 7 - 
A. 16 - 4i
B. 16 + 4
C. 16 - 4
D. 16 + 4i