Answer with Step-by-step explanation:
Amount in Bonnie's account initially=$ 70
The formula for simple interest= [tex]\dfrac{P\times R\times T}{100}[/tex]
Where P is the principal amount
R is rate of interest
and T is the time
Here, P=70,R=4.5,T=3
Interest= [tex]\dfrac{70\times 4.5\times 3}{100}[/tex]
= $ 9.45
Hence, Total amount in his savings account after 3 years= $(70+9.45)
= $ 79.45
Hence, correct option is:
B. $ 79.45
