The rate of U.S. per capita sales of bottled water for the period 1993-2003 could be approximated by 
where t is the time in years since 1990.
?
Compute the average annual sales of bottled water over the period 1996-2003, to the nearest gallon per year.
?
A. 16 gallons per year
B. 15 gallons per year
C. 17 gallons per year
D. 18 gallons per year
E. 19 gallons per year
Answer: D
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Solve.Mary and her brother John collect foreign coins. Mary has three times the number of coins that John has. Together they have 120 foreign coins. Find how many coins Mary has.
A. 84 coins B. 90 coins C. 30 coins D. 18 coins
Simplify.
A. 
B. 
C. 
D. 
Solve the problem.A coffee can comes packed with enough ground coffee to make 66 cups of coffee. After 26 cups have been made, how many cups of coffee can be made with the remaining ground coffee?
A. 92 cups B. 40 cups C. 82 cups D. 30 cups
Solve the problem.If a person puts one penny in a piggy bank on the first day, two pennies in on the second day, three pennies in on the third day, and so forth, how much money will be in the bank after 60 days?
A. $9.15 B. $18.30 C. $0.60 D. $36.60