$1500 at 4% for 5 years
a. find the interest earned.
$
b. find the balance of the account.
$

show how you st up the quation

I am assuming that this is a simple interest computation.

Given:
Principal = 1,500
interest rate = 4%
term = 5 years

Interest = Principal * interest rate * term
Interest = 1,500 * 4% * 5 yrs
Interest = 300

Total balance after 5 years:
1,500 + 300 = 1,800

The investment earned an interest of 60 per year and a total of 300 for 5 years. 

There would be 36.35 pounds