Solve for x : 3xyz= P

Which graph represents the following piecewise defined function?

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

Solve the equation for b: a= (1/2)(b)(h)