Find f[g(x)] and g[f(x)].f(x) = 
; g(x) = 2x3
A. f[g(x)] = 16/x3; g[f(x)] = 1/x3
B. f[g(x)] = 4/x3 ; g[f(x)] = 1/x3
C. f[g(x)] = 1/x3 ; g[f(x)] = 16/x3
D. f[g(x)] = 1/x3 ; g[f(x)] = 4/x3
Answer: C
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Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Perform the indicated operations. Write the result using only positive exponents. Assume all variables represent nonzero real numbers.
A. 
B. 
C. -x12
D. x12
Solve the problem.The table shows the population of a city over the past five years. 
We used these data to develop the quadratic function 
, which models the population of the city y in millions in the year x. Use the model to find the estimated population in year 10.
A. 1,490,000,000,000 B. 71,628,000 C. 66,427,000 D. 1,490,000
Provide an appropriate response.Consider the selection of officers for a club. Is this a combination, a permutation, or neither?
A. Combination B. Neither C. Permutation