Find the slope of the line that passes through these two points: (-3, -7) and (5, -5) -4 -1/4 1/4 4

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50