Please explain work!

7. (8 points) A multi-sector model Consider a version of the manufacturing bid-rent curve, but with two sectors. Let I, and 12 be the distance that firms in sector 1 and sector 2 locate away from the city center. Firms face freight, labor, and land costs - but no intermediate goods cost. To simplify the algebra, lets also assume that firms in each sector use only one unit of land (and thus the land cost, LC(r;) = P(x;) for i = 1, 2. The labor costs for each firm (as a function of distance to center) is given by: L(21) = 20 - A1 * $1 L(2) = 30 - A2 * 12 The freight costs for each firm as a function of distance is given by F(x1) = (B1 + 3) * X1 F(12) = (B2 + 3) * 12 A) Write out the profit function for a firm in each sector. You should provide two equations. Do not assume that revenue is equal in each sector. (1 points) B) Use your answer from part A to derive the bid-rent curves for manufacturing firms in each sector. (1 points)