Solve the problem.The loudness of a sound is measured in decibels (dB). The loudness L of a sound is related to its intensity I by the equation 
where I0 = 10-12 watts per square meter (W/m2) is the intensity of the faintest sound the human ear can detect. Find the dB level of a radio at average volume from 10 feet away when it has an intensity of 
W/m2.
A. ? 45 dB
B. ? 75 dB
C. ? 55 dB
D. ? 65 dB
Answer: D
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Solve the problem.The number of acres in a landfill is given by the function 
where t is measured in years. How many acres will the landfill have after 8 years? (Round to the nearest acre.)
A. 1944 acres B. 1155 acres C. 2657 acres D. 1154 acres
Determine which of the rational functions given below has the following feature(s).x-intercepts: (4, 0) and (-3, 0), y-intercepts: none, vertical asymptotes: 
and 
horizontal asymptote: 
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Use a calculator to evaluate the expression. Round the result to five decimal places.log (-10.25)
A. 2.32728 B. 1.01072 C. -1.01072 D. Undefined
Shown here are graphs of y1 and y2. The point whose coordinates are given at the bottom of the screen lies on the graph of y1. Use this graph, and not your own calculator, to find the value of y2 for the same value of x shown.
A. -6 B. -9 C. -1.5 D. 6