Answer:
$4.86
Explanation:
The package of cheese that cost $2.97 has 11 slices. To know how much each slice costs, we need to divide $2.97 by 11.
That is $2.97/11 = $0.27 per slice
Now we need to calculate how much would cost a package of 18 slices with the same price per slice.
As we now know that each slice costs $0.27, we just need to multiply 18 by $0.27 to know the total price.
That is 18*$0.27 = $4.86
A package with 18 slices would cost $4.86.