Use the quadratic formula to solve the quadratic equation.
+ x + 
= 0
A. 10 ± 
B. -5 ± 
C. 5 ± 
D. -5 ± 
Answer: D
Mathematics
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Identify the critical points. Then use the test of your choice to decide which critical points give a local maximum value and which give a local minimum value. Give these values.f(?) = cos 2?, 0 < ? < 
A. Critical point: 
; local maximum f
= 
B. Critical point: 0; local minimum f(0) = -1
C. No critical points; no local maxima or minima on the interval 
D. Critical points: 0, 
; local maximum f(0) = 1; local minimum f
= 0
Mathematics
Use a graphing calculator to approximate the area between the graphs of the pair of functions on the given interval.y = ln x and y = 9 - x2; [3, 5]
A. 12.085 B. 21.418 C. 24.010 D. 17.418
Mathematics
Find the distance between P and Q.P(2, 3), Q(-7, -7)
A. 
B. 1
C. 90
D. 
Mathematics
Find the product.
A. 
B. 
C. 
D. 
E. 
Mathematics