Use the rules of exponents to simplify the expressions. show the answer in fraction or whole number form and simplify all math that can be done, including exponent part. 2 to the power of -1 ∙ 2 to the power of -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