Answer:
$4,424
Step-by-step explanation:
Calculation to determine what amount would you have lowered your federal income tax
Using this formula
Reduction in Federal income tax amount = (Mortgage interest + Real estate taxes) x Tax rate
Let plug in the formula
Reduction in Federal income tax amount= ($13,200 + 2,600) x 0.28
Reduction in Federal income tax amount=$15,800×0.28
Reduction in Federal income tax amount = $4,424
Therefore The amount that you would have lowered your federal income tax is $4,424