Step-by-step explanation:
first you do x/5=10-6 the second step you do is x/5=4 the third step is x=4x5 finally the answer is x=20
You answer is 12 because that is where on the graph it is the most constant
The first 3 rows are proportional
because when you divide the earning by car washed they all have the same unit rate of 9.5/ to answer the second part you multiply 9.5 by 88. you'll get $836
See the attached picture for the calculation: