Marcus earns money from feeding cats and answering emails. He earns $7 a week for each cat he feeds and $0.20 for each email he answers. Marcus answered 140 emails and earned $49 last week. Part A: Create an equation that will determine the number of cats he fed. (3 points) Part B: Solve this equation justifying each step with an algebraic property of equality. (6 points) Part C: How many cats did Marcus feed last week? (1 point) (10 points) I will give