Respuesta :

apologiabiology

total=principle+intereest


I=PRT

I=interest

P=principal

R=rate in decimal

T=time in years


in our case

P=800

R=7%=0.07

T=5

find I

I=PRT

I=(800)(0.07)(5)

I=280


total she owes is 800+280=$1080