A metronome’s arm oscillates left and right from a central position. This movement is modeled by f(x)=64x^2y-100y^3. What is the maximum distance from center that the arm will swing to the right in terms of x?

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