If the man works for $25 an hour ans spends $125 on materials he will have to make equal or more than what he spent
25x ≥ 125
then you divide 25 from each side and that will leave you with
x≥ 5
so this man need to work 5 or more hours to break even or make a profit.
45 is the answer i hope this helps
486-9+6+33×2
477+6+33×2×
483+33×2×
483+66×
66×+483