Solve the quadratic equation by completing the square.x2 + 18x + 71 = 0
A. x = -18 + 
B. x = 9 + 
C. x = 9 ± 
D. x = -9 ± 
Answer: D
Mathematics
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Find the average value of the function f over the given region.f(x, y) = 
over the square 1 ? x ? 7, 1 ? y ? 7.
A. 
2
B. 
C. 
D. 
2
Mathematics
Solve the problem.
Find the area.
A. 44 
B. 742
C. 53 
D. 53 
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Name the law illustrated.9 ? 4 = 4 ? 9
A. associative law for multiplication B. commutative law for multiplication C. distributive law D. commutative law for addition
Mathematics