3t+8(2t-6)=2+14t stuck on this question

The solution set for 5v2 – 125 = 0 is

Clarence wants to buy a new car. he finds an ad for a car that costs 27,200 dollars. suppose his local sales tax is 7%. -how much would he have to pay? -what is the cost of the car including tax? -if clarence has 29,864 saved, can he pay cash to buy the car?

Find the missing dimension! need asap! tiny square is a =3025 in ²