In triangle ABC a=39 m, b=27 m and c = 42 m. Find the area
A)K=69.7 m^2
B)K=512.3 m^2
C)K=607.3 m^2
D)K=814.8 m^2

Problem 3 a bank charges a service fee of $7.50 per month for a checking account. a bank account has $85.00. if no money is deposited or withdrawn except the service charge, how many months until the account balance is negative