Find area of the composite shape

When y’all answer can y’all explain too !

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?

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