Which of the following equation represents y as a function of x?
?
A. y2= 9 -x
B. y3 = x+ 9
C. y2 = x + 9
D. x2 + y = 9
E. x2 + y2 = 9
Answer: D
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Write an equivalent fraction satisfying the stated condition.
; denominator = 9
A. 
B. 
C. 
D. 
Solve the problem.If a spring stretches 3 meters when a 6-kilogram weight is attached to it, how much will it stretch when a 48-kilogram weight is attached to it?
A. 24 m B. 27 m C. 26 m D. 23 m
Solve the problem.A farmer has 600 yards of fencing to enclose a rectangular garden. Express the area A of the rectangle as a function of the width x of the rectangle. What is the domain of A?
A. A(x) = -x2 + 300x; {x|0 < x < 300} B. A(x) = x2 + 300x; {x|0 < x < 300} C. A(x) = -x2 + 600x; {x|0 < x < 600} D. A(x) = -x2 + 300x; {x|0 < x < 600}
Decide whether or not the functions are inverses of each other.f(x) = 
, domain [-2, ?); g(x) = x2 + 2, domain (-?, ?)
A. No B. Yes