foodcart vendor has learned that by pricing burritos at $4.00 each, sales reach 150 burritos per day. Raising the price to $5.50 will cause the sales to fall to 120 burritos per day. Let y be the number of burritos the vendor sells at x dollars each. With (4, 150) and (5.5, 120) as our ordered pairs, A) identify the slope, and b) write a linear equation that models the number of burritos sold per day when the price is x dollars each. You should clearly write part a and part b and show mathematical work