Write out the first five terms of the sequence.an = (-1)n-1(7n - 9)
A. -2, 5, 12, 19, 26
B. -2, -23, 12, -19, 44
C. -2, -5, 12, -19, 26
D. 2, 5, -12, -19, -26
Answer: C
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Express the sum in sigma notation.3 + 6 + 9 + 12 + 15
A. 
B. 
C. 
D. 
Perform the indicated operation.
÷ 
A. 
B. - 
C. 
D. - 
Solve the problem.The revenue achieved by selling x graphing calculators is figured to be 
The cost of each calculator is 
How many graphing calculators must be sold to make a profit (revenue - cost) of at least $312.80?
A. {x?36 < x < 44} B. {x?14 < x < 26} C. {x?35 < x < 33} D. {x?34 < x < 46}
Solve the problem.In 1999 the stock market took big swings up and down. A survey of 975 adult investors asked how often they tracked their portfolio. The table shows the investor responses. What is the probability that an adult investor tracks his or her portfolio daily? 
A. 27.90% B. 24.34% C. 22.67% D. 27.59%