Solve the problem.The approximate monthly average temperatures in degrees Fahrenheit in a certain city can be approximated by the function f(x) = -0.005x6 + 0.31x4 - 6.14x2 + 77with domain {x|-6 ? x ? 6}. Here x represents the month with 
corresponding to July. In most cities average temperatures decrease from July to December. What month violates this trend in this particular city?
A. August
B. September
C. October
D. November
Answer: D
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Solve the formula for the specified variable.Solve: D = 
(mx - mb) for m
A. m = 
B. m = 
C. m = 
D. m = 
The graph of a function f is given. Use the graph to answer the question. 
Find the numbers, if any, at which f has a local minimum. What are the local maxima?
A. f has a local maximum at x = -2.5 and 5; the local maximum at -2.5 is -3.3; the local maximum at 5 is -2.5 B. f has a local minimum at x = -2.5 and 5; the local minimum at -2.5 is -3.3; the local minimum at 5 is -2.5 C. f has a local minimum at x = -3.3 and -2.5; the local minimum at -3.3 is -2.5; the local minimum at -2.5 is 5 D. f has a local maximum at x = -3.3 and -2.5; the local maximum at -3.3 is -2.5; the local maximum at -2.5 is 5
Find the nth term an of the geometric sequence.2, 
, 
, 
, 
, . . .
A. an = (2)
n-1
B. an = (2)
n+1
C. an = (2)
n
D. an = (2)
n-1
Give all possible rational zeros for the polynomial.f(x) = 2x3 + 9x2 + 8x - 8
A. ±1, ±2, ±4, ±8
B. ±1, ± 
, ± 
, ± 
, ±2
C. ±1, ± 
, ±2, ±4, ±8
D. ±1, ±2, ±4