2. each year a certain amount of money is deposited in an account which pays an
annual interest rate of r so that at the end of each year the balance in the account is
multiplied by a growth factor of x = 1 + r. $500 is deposited at the start of the first
year, an additional $200 is deposited at the start of the next year, and $600 at the
start of the following year.
a. write an expression for the value of the account at the end of three years in
terms of the growth factor x.
b. what is the amount to the nearest cent) in the account at the end of three
years if the interest rate is 2%?
3. consider the polynomial function p given by p(x) = 5x3 + 8x2 – 3x + 1. evaluate the
function at x = -2.