College MML Help

Question

Company A charges a delivery fee of ​$40 regardless of the amount of mulch delivered within a​ 20-mile radius of the store. The cost of Absolute Black Ultra mulch is ​$49.99 per cubic yard at Company A. Company B is having a special and charges ​$44.89 for Absolute Black Ultra​ mulch, but their delivery charge is ​$50 for any quantity of mulch. For how many cubic yards is buying mulch from Company B​ cheaper?

Answer 1

Let x = the amount of mulch you buy:

Cost of A = ($49.99)x + $40

Cost of B = ($44.89)x + $50

You want Cost B < Cost A

(44.89)x + 50 < (49.99)x + 40

Solve for x