Answer:
the number of cars washed per person is not the same for each number of workers, so the relationship is not proportionalStep-by-step explanation:
Sarah
reason
she has the most consistent scores
1.
15 × 12× 20
3600
2.
2×2×3
12
3.
24.3×8.5×9.7
2003.535
Taking 30% percent of something is the same as multiplying by .3
so, .3*20 = 6
Answer: 8+(x÷39) or (x÷30)+8