it’s due in 20 minutes .

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

The anwser cause i do not understand just plez

What is the approximate value of  x  in the equation below.–3.396–0.7080.3040.955