Answer:
I = $ 90.90
Equation:
I = Prt
Calculation:
First, converting R percent to r a decimal
r = R/100 = 4.5%/100 = 0.045 per year,
then, solving our equation
I = 505 × 0.045 × 4 = 90.9
I = $ 90.90
The simple interest accumulated
on a principal of $ 505.00
at a rate of 4.5% per year
for 4 years is $ 90.90.