Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a20, the 20th term of the sequence.3, 12, 21, 30, 39, . . .
A. an = 9n - 2; a20 = 178
B. an = 6n - 2; a20 = 118
C. an = 9n - 6; a20 = 174
D. an = 6n - 9; a20 = 111
Answer: C
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Use reduction formulas to evaluate the integral.
A. 
tan4 2x - 
tan2 2x + 
ln
+ C
B. 
tan4 2x - 
tan2 2x - ln
+ C
C. - 
tan4 2x + 
tan2 2x - 
ln
+ C
D. 
tan4 2x - 
tan2 2x - 
ln
+ C
Write an equation for the graph given. The graph represents an logarithmic function f with base 2 or 3, translated and/or reflected.
A. log2(x - 1) - 1 B. log2(x - 1) + 1 C. log2(x + 1) + 1 D. log2(x + 1) - 1
The pie chart below shows the number of pizzas consumed by college students in a typical month. Use the chart to answer the question. 
What percent of college students consume no pizzas in a typical month?
A. 5% B. 34% C. 2% D. 18%
Use the given zero to find the remaining zeros of the function.f(x) = x5 - 10x4 + 42x3 -124 x2 + 297x - 306 ; zero: 3i
A. 2, -3i, -4 - i, -4 + i B. -2, -3i, -4 - i, -4 + i C. -2, -3i, 4 - i, 4 + i D. 2, -3i, 4 - i, 4 + i