Write a formula for the nth term of the arithmetic sequence. Do not use a recursion formula.1, -1, -3, -5, -7, . . .
A. an = -5 - 2n
B. an = -2n - 3
C. an = 2n - 3
D. an = -2n + 3
Answer: D
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The following table shows the number N, in thousands, of newspaper subscriptions t years after initial publication. Use exponential regression to determine when the number of subscriptions can be expected to reach 236.64 thousand. Round your answer to two decimal places. t 0 3 6 9 12 N 6.27 15.30 36.61 91.11 229.09?
A. 12.13 years after initial publication B. 14.50 years after initial publication C. 14.60 years after initial publication D. 13.96 years after initial publication
Write exponential notation.(-9.1) ? (-9.1) ? (-9.1) ? (-9.1) ? (-9.1) ? (-9.1)
A. -(9.1)6 B. -(9)6 ? (1)6 C. (-9.1)6 D. 6(-9.1)
Find a so that the statement is true.
?
?
A. 0 B. 3 C. 2 D. 4 E. 1
Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.sec 
A. 1.36 B. 1.12 C. 1.00 D. 1.24