Help pls this is a test I need a good grade

y=1.125x

Step-by-step explanation:

look for the relationship between 8 and 9 (you also can do 40 and 45). i split up 9 into 8 and 1. i saw how many times 1 went into 8. that was 8. then i did 1/8. which i got 1.125

y = 9/8x

Step-by-step explanation:

Set both up as fractions, and reduce, because this equation is in the form y = kx, both fractions reduce to the same value (proportional).

So:

9/8 = 9/8 × 5/5 = 45/40.

5/5 = 1.

45/40 = 45/40 ÷ 5/5 = 9/8.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

the answer is 375 miles

step-by-step explanation: