The simplifies the interaction of two groups, firms and households, and allows us to make predictions about economic behavior.

Circular flow diagram.

Explanation:

The circular flow diagram simplifies the interaction of two groups, firms and households, and allows us to make predictions about economic behavior.

The firm sells their goods and services in the market while the household buys these goods and services.

Hence, the circular flow diagram represents the interaction between the household and firms with respect to the market.

month 1 start amount =$3287.90 interest=(3287.90x0.0145/12)3.97 total to pay=$3291.81 paid =$1200 balance =$2,091.87

month 2 starting amount= $2,091.87 interest =$25.28 total to pay =$2117.15 paid =$1200 balance $917.15

month 3 starting amount =$917.15 interest =$11.08 total to pay =$928.23 paid =$928.23 balance =$0 total to pay 1200+1200+928.23 = $3328.23 it will take 3 months to pay a total of $3328.23