Arectangular garden of area 408 square feet is to be surrounded on three sides by a brick wall costing $ 12 per foot and on one side by a fence costing $ 5 per foot. find the dimensions of the garden such that the cost of the materials is minimized.

17 and 24

Step-by-step explanation:

24*17=408, and that's the pair of factors that is the closest to each other, meaning that it'll minimize the perimeter and thus minimize the cost.

12*(17+17+24)+5*24=816, minimal cost

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)