Answer:
earnings/per year - cost/per year - taxes = profits
Step-by-step explanation:
20 h /week a year has 4 weeks 20*52=1040 h/month
8h /1sunday a year she only work 12 sundays 8h*12=96h
$9 /h earnings
$1000 fixed costs
$1500 travel
20% taxes
1040+96= 1136h/year
1136*9= 10224 $/year total earnings
10224-1000-1500=7724 profits before interest and taxes
7724*(1-0.20)=6179.20 total profits