What is 3x+7x-9x+4x+10+12x if x=2

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

1. how do you convert the repeating, nonterminating decimal 0. to a fraction? explain the process as you solve the problem.

I’m really confused and need your assist me with this question i’ve never been taught