Answer:
it should be 44%
Step-by-step explanation:
3r + (9 + 2r + 1)
this can be simplified :
3r + (9 + 2r + 1) = 3r + 2r + 9 + 1 = 5r + 10
x=13
40 dollars
Profit is what he earned minus his costs
Profit = 125 -85
Profit = 40
sqrt166, 13, 14
it's not even hard
......