Answer:
A) Interest=$4,070
B) Total amount=$12,070
Explanation:
A) From the question,
Principal,P =$8,000
Rate,R=9.25%=0.0925
Time,T=66 months=5.5yrs
We can calculate the interest by the relation,
I=PRT
By substitution,we obtain

I=$4,070
B) Adding the principal and the interest gives the total amount to be paid.
Implies that,
Total Amount=$8,000+$4,070=$12,070