Solve. Write a mixed numeral for the answer.A test of five light bulbs showed that they burned for the following lengths of time (in days): 17
, 19
, 
21, and 18
. For how many days, on average did the light bulbs burns?
A. 19
days
B. 19
days
C. 19
days
D. 19
days
Answer: C
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Use an equation to solve the problem.Sales tax on a $11 compact disc is $0.66. At what rate is sales tax computed?
A. 2% B. 6% C. 4% D. 9% E. 3%
Use the Factor Theorem to determine whether x - c is a factor of f(x).f(x) = 5x4 + 9x3 - 2x2 + x - 2; x + 2
A. Yes B. No
Find the common difference for the arithmetic sequence.8, 13, 18, 23, . . .
A. 8 B. 3.75 C. 15 D. 5
The first bird can fly about 20 mph faster than the second one. In the same time that the first bird travels 120 miles, the second bird travels 60 miles. Find their flying speeds.
A. The first bird: 41 mph; the second bird: 21 mph B. The first bird: 37 mph; the second bird: 17 mph C. The first bird: 40 mph; the second bird: 20 mph D. The first bird: 42 mph; the second bird: 22 mph E. The first bird: 36 mph; the second bird: 16 mph