Determine the average rate of change for the function.f(x) = 
x + 1
A. - 1
B. - 
C. 1
D. 
Answer: D
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Solve the problem.Without using a calculator, find the geometric mean of 10 and 90.
A. 900 B. 100 C. 30 D. 50 E. 80
The population of a certain community is increasing at a rate directly proportional to the population at any time t. In the last 1 yr, the population has doubled. How long will it take for the population to triple? ? Round the answer to the nearest hundredth, if necessary. ? __________ yr(s)
Fill in the blank(s) with the appropriate word(s).
Find a general term for the geometric sequence.5, -15, . . .
A. an = -20n-1 + 5 B. an = 5 + 15n C. an = 5(-3)n-1 D. an = -20n + 25
Solve the problem.How many different three-number "combinations" are possible on a combination lock having 24 numbers on its dial? Assume that no numbers repeat. (Combination locks are really permutation locks.)
A. 5.1004 × 105 three-number "combinations" B. 1.5301 × 106 three-number "combinations" C. 2.5502 × 105 three-number "combinations" D. 12,144 three-number "combinations"