Alexis just turned 17. She received $400 from friends and family for her birthday. She decides to put the
$400 into a U.S. government bond that grows 6% annually.
a. Write an equation that represents how Alexis' bond grows, where f(x) represents the value of the
bond at a given time, x.
b. How long will it take for the investment to double in value?
c. What will the value of Alexis' bond be if she takes his money out on her 37th birthday?
