Use the change-of-base formula and a calculator to evaluate each logarithm.log100 20
A. 0.6505
B. 4.6052
C. 1.5373
D. 2.9957
Answer: A
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Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Solve the problem.During one year, the Larson's real estate bill included $509 for local schools. Of this amount, $140 went to the high school district. What percent did the Larsons pay to the high school district? Round your answers to the nearest tenth, if necessary.
A. 7126% B. 27.3% C. 72.5% D. 27.5%
Tell whether or not the rational expressions are equivalent.
, 
A. Yes B. No
Provide an appropriate response.If Q = 69e0.5t what happens to Q and to Q' as t increases?
A. Q decreases and Q' decreases. B. Q increases and Q' increases. C. Q decreases and Q' increases. D. Q increases and Q' decreases.