Simplify the expression. Assume that all variables are positive when they appear.
A. 41
B. 
C. 
D. 5
Answer: C
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Solve the problem.For the study described below, identify the population.A manufacturer of light bulbs wants to determine the average lifetime of its 75-watt light bulbs. Among 120 randomly selected 75-watt light bulbs, the average lifetime was 1007 hours.
A. All 75-watt light bulbs manufactured by the company B. The 120 randomly selected 75-watt light bulbs C. All 75-watt light bulbs D. The average lifetime of all 75-watt light bulbs manufactured by the company
A board foot is the volume of a piece of wood 1 foot by 1 foot by 1 inch. A deck is designed as shown below. One inch by six inch boards are to be used for the surface of the deck. How many board feet are required for this part of the job?
Find the exact perimeter. Then approximate your answer to the nearest tenth.
A. 13
, 31.8
B. 22
, 53.9
C. 9
, 22.0
D. 26
, 63.7
Factor the polynomial completely.49x2 - 36
A. (7x - 6)2 B. (7x + 6)2 C. (7x + 6)(7x - 6) D. (49x + 1)(x - 36)