<u>Answer:</u>
y = 122.57
<u>Explanation:</u>
y = 143 when x = 49
Y varies directly with x, so the equation is --> y = kx (k would be the constant of variation).
k = y/x = 143/49
y = (143/49) x
When x = 42 --> y = (143/49) · 42 --> y = 2.92 · 42 --> y = 122.57
You will be multiplying $49 by $7 because you have $49 and want to divide it by $7 per wash. When you divide 49 by 7 you get 7. Therefore, you will be able to purchase 7 carwashes for the cost of $7 with $49.
35/100= 7/20
hope this helps
Right it down on a list and retract and that’s your answer
