(a)[3]
Zaya puts $\$4500$ into a savings account. The account gives simple interest at a rate of $3.2\%$ per year. Calculate the value of the investment after $5$ years.
(b)[3]
Aisha puts $\$2750$ into a different savings account. This account pays compound interest at a rate of $2.1\%$ per year. Calculate the total amount of interest she receives after $3$ years.