Data:
P (Principal) = $1500
I (Simple Interest) = ?
t (time) = 5 years
r (percentage rate) = 4% = 0.04
Formula:

Solving (1) <span>Find the interest earned.</span>



Solution (2) <span>Find the balance of the account.
</span>The future value, (Account), of a loan is given by the equation: A = P + I


Answer:
heres an example of substitution in a world problem. hope this helps on some other problens
The answer would be 7 becuase if rounded