Does the problem involve permutations or combinations? Do not solve.In a student government election, 5 seniors, 3 juniors, and 
sophomores are running for election. Students elect four at-large senators. In how many ways can this be done?
A. permutations
B. combinations
Answer: B
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Find a formula for the nth term of the sequence.The sequence 0, 2, 0, 2, 0, . . . (alternating 0's and 2's)
A. an = 1 + (-1)n+1 B. an = 1 + (-1)n C. an = 1 + (-1)n-1 D. an = 1 - (-1)n
Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Use a graphing calculator to find a viewing window that shows a complete graph of the given polynomial function (that is, a graph that includes all the peaks and valleys and indicates how the curve moves away from the x-axis at the far left and far right.) There are many possible correct answers.f(x) = x5 - 2x4+ 2x3 - 7x2 - 8x + 3
What will be an ideal response?
Let U = {q, r, s, t, u, v, w, x, y, z}; A = {q, s, u, w, y}; 
and 
List the members of the indicated set, using set braces.(A ? B)'
A. {s, u, w} B. {t, v, x} C. {q, s, t, u, v, w, x, y} D. {r, t, u, v, w, x, z}