Answer:
We can set up an equation using the information provided. Let x be the cost to clean a pair of pants.
The cost to clean 4 shirts is 4*2.95 = $11.80
The cost to clean 5 pants is 5x
The total cost is $11.80 + 5x = $29.05
So, we can represent the cost to clean a pair of pants as:
x = $29.05 - $11.80 / 5
This number sentence shows the cost to clean a pair of pants is x = $4.81