Solve the problem.In the following formula, y is the minimum number of hours of studying required to attain a test score of x: y = 
. How many hours of study are needed to score 83? Round to the nearest hundredth of an hour.
A. 4.51 hr
B. 101.05 hr
C. 1.75 hr
D. 17.50 hr
Answer: C
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Solve the problem.An object is dropped from 10 ft above the surface of the moon. How long will it take the object to hit the surface of the moon if 
A. 0.96 sec B. 1.39 sec C. 1.96 sec D. 3.85 sec
Use the distributive property to multiply. Then, if possible, simplify the resulting expression.3(7 + m)
A. 21m B. 21 + m C. 21 + 7m D. 21 + 3m
Solve the problem.If x is the hydrogen ion concentration of a sample of water, then the pH of that water sample is 
If the pH of the water from one lake is 5.0 and the pH of the water from a second lake is 5.4, how many times greater is the hydrogen ion concentration of the second lake than the hydrogen ion concentration of the first lake? Round your answer to the nearest hundredth.
A. 8.43 B. 0.40 C. 2.51 D. 12.02
The figure shows a transformation of the graph of y = x2. Write the equation for the graph.
A. g(x) = -x2 + 4 B. g(x) = -x2 C. g(x) = -(x + 4)2 D. g(x) = -x2 - 4