Answer:
she sold 21 teeshirts
Explanation:
y=5x -22 is the equation for the cost of the tee shirts for her (22) and the cost for others(5x bc we dont know the amount shes sold yet).
if she made 85 dollers in profit shehad already paid off the 22 dollars it cost.
So you would add 22+83. which would equal 105. then divide 105 by 5 for the number of tee shirts she sold. 105/5 =21