Answer:
He can save $76.8 by buying them at the Fitness Depot.
Explanation:
If the coach buys a dozen footballs, it means that he buys 12 and first, you need to determine the cost of purchasing the 12 footballs at each store by multiplying the amount of footballs for the price at each store.
-Sports R' Us: $27.99*12=$335.88
-Fitness Depot: $21.59*12=$259.08
Then, you have to find the difference between the total cost at both places:
$335.88-$259.08=$76.8
According to this, the answer is that he can save $76.8 by buying them at the Fitness Depot.