The food truck is selling sandwiches. It costs $7 each week to advertise the sandwiches. Each sandwich costs $4.25 to make and each sells for $6.50. Write an equation to model the amount of profit, P, the food truck will make from selling x sandwiches in one week.
P = 4.25x â 7
P = 2.25x â 7
P = 6.50x â 4.25
P = 7x + 2.25