Solve the problem.The amount of a certain drug in the bloodstream is modeled by the function 
, where y0 is the amount of the drug injected (in milligrams) and t is the elapsed time (in hours). Suppose that 10 milligrams are injected at 10:00 A.M. If a second injection is to be administered when there is 1 milligram of the drug present in the bloodstream, approximately when should the next dose be given? Express your answer to the nearest quarter hour.
A. 5: 30 P.M
B. 5:45 P.M
C. 12:30 P.M
D. 3:45 P.M
Answer: D
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Evaluate the expression.16 ÷ 
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Bernie invested a sum of money 7 year(s) ago in a savings account, which has since paid interest at the rate of 8% / year compounded quarterly. His investment is now worth $22,927.66. How much did he originally invest? Round your answer to the nearest cent. ?
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Match the graph to the function listed whose graph most resembles the one given.
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