Solve.The temperature on a November morning is -4°F at 3 a.m. If the temperature drops 5° by 4 a.m., rises 3° by 5 a.m., and then drops 2° by 6 a.m., find the temperature by 6 a.m.
A. 8°F
B. 14°F
C. -14°F
D. -8°F
Answer: D
Mathematics
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Solve the problem.The surface area of a cylinder whose radius is r inches and height is 9 inches is given by 
square inches. Express the surface area in factored form.
A. 2?r(r + 9) B. 2(?r2 + 18?r) C. 2?r(r + 18) D. 2?(r2 + 18?)
Mathematics
Solve the problem.If f(4) = 15, what is f-1(15)?
A. 
B. 15
C. -4
D. 4
Mathematics
Perform the operation indicated. Simplify.
+ 
A. x - 3
B. x - 5
C. x + 3
D. 
Mathematics
For the functions f(x) and g(x), determine the domain of (f ? g)(x) (the product of f and g).f(x) = 
, g(x) = 
A. {x ? x is a real number and x ? -3 and x ? -11} B. {x ? x is a real number} C. {x ? x is a real number and x ? 3 and x ? 11} D. {x ? x is a real number and x ? 3}
Mathematics