Use the change-of-base formula and a calculator to evaluate each logarithm.log2.8 284
A. 2.4533
B. 5.4865
C. 101.4286
D. 0.1823
Answer: B
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Solve.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 50 seconds are required to make a 5-by-5 enlargement, find the time required for a 6-by-7 enlargement.
A. 126 sec B. 42 sec C. 84 sec D. 168 sec
Compute the probability of an event for equally likely outcomes (theoretical probability).If a single die is rolled, what is the probability that the number rolled is less than 2?
A. 
B. 
C. 
D. 
Solve the problem.The manufacturer of a CD player has found that the revenue R (in dollars) is
when the unit price is p dollars. If the manufacturer sets the price p to maximize revenue, what is the maximum revenue to the nearest whole dollar?
A. $174,240 B. $696,960 C. $348,480 D. $87,120
Find the root. If the root is not a real number, so state.
A. 6 B. 36 C. not a real number D. -6