mrs. harrison borrows $600 to pay for a new phone. the simple interest on the loan is 9% for one year. what…

Explanation:

Step1: Calculate simple - interest

The simple - interest formula is $I = Prt$, where $P$ is the principal amount, $r$ is the interest rate, and $t$ is the time. Here, $P=$600$, $r = 9%=0.09$, and $t = 1$ year. So, $I=600\times0.09\times1 = 54$.

Step2: Calculate total amount

The total amount $A$ to be paid back is the sum of the principal $P$ and the interest $I$. So, $A=P + I=600 + 54=$654$.

Answer:

$654$