Kathleen is ordering wraps from a local sandwich shop. The total charge includes a set delivery fee plus the price per wrap. Each rap is the same price. Kathleen asks about specific orders and is given the following info:

Question

If she orders 20 wraps, the total cost will be $100
If she orders 25 wraps, the total cost will be $122.50

Write a linear equation in the form y=mx+b to represent y, the total cost of ordering x sandwiches. Explain how your answer is correct.

Answer 1

cost=minute y=0.o3x+10