Solve the problem.One side of a rectangle is 7 inches and the other side is x inches. Find the value of x if the area must be at least 84 square inches.
A. x ? 12
B. x ? 12
C. x = 12
D. 0 < x ? 12
Answer: B
Mathematics
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Simplify the expression. Assume that all variables are positive.
1/2
A. x3y2 B. 5x6y2 C. 5x3y2 D. 5x3y
Mathematics
Solve the system of equations by substitution.2x + 9y = -8 x + 
y = 
A. (5, -2) B. (5, 2) C. (-5, 2) D. ( -5, -2)
Mathematics
Solve by using the percent proportion 
= 
.290 is what percent of 224?
A. 
= 
; p = 129.46
B. 
= 
; a = 649.6
C. 
= 
; p = 77.24
D. 
= 
; b = 129.46
Mathematics
Find all complex-number solutions by completing the square.x2 + x + 6 = 0
A. 
B. 
C. 
D. 
Mathematics