Solve.If f(x) = ?x? (solid line)and g(x) = 6 (dashed line), find when f(x) = g(x) and when f(x) > g(x). 
A. f(x) = g(x) when x = 6 and x = -6
f(x) > g(x) when x < -6 or x > 6
B. f(x) = g(x) when x = -6
f(x) > g(x) when x > 6
C. f(x) = g(x) when x = 6
f(x) > g(x) when x < -6
D. f(x) = g(x) when x = 6 and x = -6
f(x) > g(x) when x > -6 and x < 6
Answer: A
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Solve the problem.A farmer's silo is the shape of a cylinder with a hemisphere as the roof. If the height of the silo is 61 feet and the radius of the hemisphere is r feet, express the volume of the silo as a function of r.
A. V(r) = 61?r2 + 
?r3
B. V(r) = ?(61 - r)r3 + 
?r2
C. V(r) = ?(61 - r) + 
?r2
D. V(r) = ?(61 - r)r2 + 
?r3
Simplify. Assume that all variables represent positive real numbers.
+ 
A. 9
B. 18
C. 3
D. 2
Divide, if possible. If not possible, write "not defined." 
A. 1,418 B. 1,420 R 4 C. 1,420 D. 1,418 R 1
Find the values of x and y.
= 
A. x = 
, y = 5
B. x = 5, y = 5
C. x = 2, y = -3
D. x = 3, y = 5