Answer:
$900
Explanation:
Under the lease agreement, Andrew will pay the following amount in 1 year
$300 + (12*$700)= $300+$8400 = $8700
After 7 months of living in the Apartment under the lease the payments made are;
$300+(7*$700)=$300+$4900 =$5200
Without the lease,in 7 months in the Apartment Andrew should pay
$500 + (7*800) = $500 + $5600 = $6100
The balance will be: $6100 - $5200=$900
where the balance of the security deposit is $200 and rent reduction is $700