Solve the problem.The following graph shows types of paint sold at a local hardware store and the percent of sales for each type of paint.
What portion of paint sales were flat interior? Write the answer as a percent and as a decimal.
A. 30%, 0.3
B. 20%, 0.2
C. 5%, 0.05
D. 25%, 0.25
Answer: D
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Solve the problem.Suppose that the velocity of a falling body is v = ks2 (k a constant) at the instant the body has fallen s meters from its starting point. Find the body's acceleration as a function of s.
A. a = 2ks3 B. a = 2ks2 C. a = 2ks D. a = 2k2s3
Find two sets of parametric equations for the given rectangular equation.y = 2x + 2
A. x = t, y = 2t + 2; x = t, y = 
+ 2
B. x = 2t, y = t + 2; x = 
, y = t + 2
C. x = t, y = 2t + 2; x = 2t, y = t + 2
D. x = t, y = 2t + 2; x = 
, y = t + 2
Simplify.7log7 (5x)
A. 1 B. 5x C. 7 D. 75x
Solve the problem.At a local grocery store the demand for ground beef is approximately 50 pounds per week when the price per pound is $4, but is only 40 pounds per week when the price rises to $5.50 per pound. Assuming a linear relationship between the demand x and the price per pound p, express the price as a function of demand. Use this model to predict the demand if the price rises to $5.80 per pound.
A. p = 0.15x + 11.5; 38 pounds B. p = 11.5x + -0.15; 40 pounds C. p = - 0.15x + 11.5; 38 pounds D. p = - 0.15x - 11.5; 40 pounds