Which of the following equations have infinitely many solutions? Choose all answers that apply:
10x-10=-10x+1010x−10=−10x+10

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