Find the axis of symmetry of the quadratic function.f(x) = -x2 + 8x - 5
A. x = 11
B. x = -4
C. x = 8
D. x = 4
Answer: D
Mathematics
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Determine all critical points for the function.f(x) = x3 - 12x - 1
A. x = -2 and x = 2 B. x = 2 C. x = -2, x = 0, and x = 2 D. x = -2
Mathematics
Solve the problem.Joshua David strings tennis racquets. He is paid $1.50 for each racquet and he is charged $0.75 per rejection. Find his gross earnings for the following work days.
?
A. $1716.00 B. $1675.50 C. $1659.75 D. $1677.75
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Find the difference. Write the difference in lowest terms. 13 - 5
A. 7
B. 12
C. 8
D. 8
Mathematics
Convert the rectangular equation to polar form.x = 2
A. r = 
B. r = 
C. r = 2
D. cos ? = 2
Mathematics