Lincoln and his children went into a bakery and where they sell cookies for $1 each and brownies for $1.75 each. Lincoln has $15 to spend and must buy at least 9 cookies and brownies altogether. If Lincoln decided to buy 7 cookies, determine the maximum number of brownies that he could buy. If there are no possible solutions, submit an empty answer.

The maximum amount of brownies he can buy is 4

Step-by-step explanation:

7x1=7

15-7=8

8/1.75= 4.57142857

4.57142857 = 4

$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)