Can I add someone on sc so you can help with my math pleas

Ernest is purchasing a $175,000 home with a 30-year mortgage. he will make a $15,000 down payment. use the table below to find his monthly pmi payment.

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1