How would you solve this with steps? i can not get it.. i keep trying.

i'm down to (x+1)(x-2)=x^2-27x-(x+5)(x+5) should i have factored out the gcf from x^2-27x to get x(x-27) and bring it down or no? and i can't figure out how they're getting a positive anyone ?

Woodland bicycles makes two models of off-road bicycles: the explorer, which sells for $250, and the grande expedition, which sells for $350. both models use the same frame, but the painting and assembly time required for the explorer is 2 hours, while the time is 3 hours for the grande expedition. there are 375 frames and 450 hours of labor available for production. how many of each model should be produced to maximize revenue? a. 200 explorers 50 grande expeditions c. 225 explorers 0 grande expeditions b. 150 explorers 10 grande expeditions d. 325 explorers 50 grande expeditions