Solve the inequality.x2 - 9 > 0
A. (-3, 3)
B. (-?, -9) or (9, ?)
C. (-?, -3) or (3, ?)
D. (-9, 9)
Answer: C
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Evaluate the expression. |7 - 8|
A. 1 B. 15 C. 56 D. -1 E. -15
Evaluate the expression.61
A. 
B. 6
C. 1
D. -6
Find the average value of the function f over the region R.f(x, y) = 
R: 1 ? x ? 8, 1 ? y ? 8
A. 
B. 
C. 
D. 
Solve the problem.An experimental model for a suspension bridge is built in the shape of a parabolic arch. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers are both 9 inches tall and stand 60 inches apart. Find the vertical distance from the roadway to the cable at a point on the road 9 inches from the lowest point of the cable.
A. 3.24 in. B. 0.61 in. C. 0.81 in. D. 1.01 in.