34.) if a quadrilateral is a parallelogram and the diagonals are perpendicular, then it must be a rectangle. a. true b. false

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