Use the quadratic formula to find the exact solutions.5x2 - 8x - 21 = 0
A. -7, 3
B. - 
, 6
C. -3, 
D. - 
, 3
Answer: D
Mathematics
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Determine the center and the radius of the circle.49(x - 6)2 + 49y2 = 81
A. (6, 0), r = 
B. (0, -6), r = 
C. (6, 0), r = 9
D. (-6, 0), r = 
Mathematics
Find the function value.For f(x) = -|x - 2|, find f(-4).
A. -4 B. -6 C. 2 D. 6
Mathematics
Use front end rounding to estimate the answer. Then use your estimate to select the correct exact answer.9.6 + 0.002
A. 9.602 B. 9.612 C. 9.502
Mathematics
Solve the problem.The sum of the ages of Art, Ben, and Cal is 59. Art is 1 year older than Cal and Cal is 1 year younger than Ben. Which of these people were teenagers 7 years ago?
A. Ben B. Art and Ben C. Art, Ben, and Cal D. Art
Mathematics