Please help:

Question

Jaylee wants to have a mural for her room. She has two bids: #1 Artist charges an initial fee of $79.50, plus $1 sq ft. Artist #2 does not charge a initial fee and charges $2.50 sq ft. Which size of mural(in sq ft) will be the same cost when painted by either artist?

Answer 1

for x ft^2, the cost will be equal when

79.50 + 1.00x = 0.00 + 2.50x