== CHECK Your Understanding
1. Danielle invested money in two different accounts. Her investments
can be modelled by the following growth functions, where x represents
the time in years:
A. Y
1500(1.05)*
B. y = 2000(1.035)*
a) What was the principal that Danielle invested in each account?
b) What was the annual interest rate for each investment? Explain.
c) Determine the value of each investment at the end of 5 years
.
5
d) How long, in years, did it take for each account to have at least
$3000?
1.