Jessica loves birds and has made 35 birdhouses to sell. She has determined the cost of making each birdhouse is $20 not including painting them with her Perfect Purple paint, which makes the birdhouse a guaranteed seller.

the answer is simply just 6n add the two together as they have an n

2b2t

explanation:

2b2t

perpendicular to x*4 means it's y = -1/4*x+k

so for y = 7 and x = 2

we have 7 = -1/4*2 + k so k = 7.5

so the equation is   y = -1/4x + 7.5