Question

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?

Answer 1

A.
7 times number of cats=pay
if pay=49 then
7 times number of cats=49
divide both sides by 7
number of cats=7

da equaton can be
c=number of cats
7c=49

he fed 7 cats


B.

7c=49
divide both sides by 7
equality property of division
(7c)/7=49/7
math fact
(7/7)c=7
1c=7
identity property of division
c=7
identity property of multiplication
7 cats

C. 7 cats