Solve problems using a calculator.The Passive House Standard is a strict building code used as a state guideline for building energy-efficient homes. The total primary energy consumption of a building following this code must not be more than 19,020 Btu per square foot per year. What would this annual maximum be for a 4500-square-foot house?
A. 85,540,000 Btu per year
B. 85,590,000 Btu per year
C. 85,570,000 Btu per year
D. 85,530,000 Btu per year
Answer: B
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Solve the problem.Suppose that 4527 units of a new product were sold in the first year. Each year after that, sales of the product were half the previous year's sales. Let S be the total number of units sold in the year that is t years after the first year. Write an exponential model for S.
A. S = 4527(0.5)t B. S = (4527)0.5t C. S = 4527(2)t D. S = 4527(0.5t)
Solve the problem.If y varies directly as x2 and inversely as m, and y = 4 when x = 5 and m = 2, find y when x = 10 and 
A. 0.67 B. 0.83 C. 5.33 D. 2.67
Solve the problem.How many different 4-letter radio-station call letters can be made if the first letter must be K or W, repeats are allowed, but the call letters cannot end in an O?
A. 33,800 B. 16,900 C. 35,152 D. 456,976
Solve.In baseball, a player's batting average is the total number of hits divided by the total number of times at bat. A baseball player has 10 hits after 38 times at bat. How many additional consecutive times must the batter hit the ball to achieve a batting average of .440?
A. 14 B. 22 C. 17 D. 12