4. Kate and Sally went to the mall to shop. Kate bought 2 pairs of shoes and 2 pairs of sunglasses for $36.50. Sally bought 4 pairs of shoes and 1 pair of sunglasses
for $46.75.
In the system of equations below, x represents the cost of a pair of shoes and y
represents the cost of a pair of sunglasses.
2x + 2y = 36.50
4x + y = 46.75 ---> rewrite as y = 46.75 - 4x
What is the value of x, the cost of a pair of shoes?
Show work here: (5 points)