W₁
EXPONENTIAL MODELING REVISITED
COMMON CORE ALGEBRA II HOMEWORK
Date: 10-17-22
APPLICATIONS
Chalise has a savings account that doubles its worth every 16 years. She initially places $1,500 into the
account. If A represents the amount the account is worth and i represents the number of years since she
deposited the $1,500 then answer the following questions.
(2) Write a model for the amount the account is (b) How much is the account worth after 10 years?
worth, A(t), as a function of the number of
years, 1, that it has been growing.
(c) Determine, graphically, how many years it will
take for the account to triple. Show your graph
on the axes below. Properly label your graph.
(d) Chalise is hoping that she is earning at least
4% interest on the account per year. Is she?
Show how you determined your answer.