Arnold deposited $732.19 in a savings account that earns 2.7% simple interest. What is Arnold's account balance after seven years?

A: $751.96

B: $1,383.84

C: $138.38

D: $870.57

Verified Answer :

 $732.19 * 0.027 * 7 = $138.38 ....interest earned

 $732.19 + $138.38 = $870.57......total

answer is 
D: $870.57