Question

A roofer calculates his bid price using the formula P = 1.85s + 4.2f,
where s is the area of the roof in square feet and f is the length of
the fascia in feet. Find the area of the roof with 190 feet of fascia
and a price of $4,148.

Answer 1

P = 1.85s + 4.2f
1.85s = P - 4.2f
s = (P - 4.2f)/1.85

s = (4148 - 4.2(190))/1.85
s = (4148 - 798)/1.85
s = 1810.8 square feet