Please help again i need help for a good cause

a. The income is I = 12n + 150

They earn $12 for each shirt, which amounts to a total of 12n, plus an extra $150 from a sponsor.

b. E = 4.25n + 250

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:

2500

step-by-step explanation: