Answer:
The expression for the total cost is C=5x+4y
Explanation:
step one:
given that the total number of Hats bought is
5
the total number of T-shirt bought is 4
step two:
let the cost of Hat be x
and also the cost of the T-shirt be y
also, let the total cost be C
step three:
the total cost of all hats and t-shirts is given as
C=5x+4y