Answer:
$198.95
Step-by-step explanation:
Calculation for How much must the homeowner save on water heating costs every year if this is to be a sound investment
Using this formula
Saving =Cost *Interest rate
Let plug in the formula
Savings=3,979*5%
Savings=$198.95
Therefore How much must the homeowner save on water heating costs every year if this is to be a sound investment is $198.95