Answer:
Use all the given information:
Price of a slice in $ - x
Number of slices- 3
Total cost of slices- 3x
Price of chopped cheese in $- 2+x
Number of chopped cheeses- 4
Total cost of chopped cheeses- 8+4x
Total cost- 7x+8
Explanation:
We are told that the price of a slice is x and that Dashaun bought 3 slices.
So to find the total amount paid for slices, multiply the price by the number of slices:

We are told that the price of chopped cheese is $2 more than a slice. Use y as the cost for chopped cheese:

Dashaun bought 4 chopped cheeses.
To find the total cost of chopped cheeses bought, multiply the cost per cheese by the amount of cheese purchased:

Insert the value of y:

Use the distributive property:

This is the total cost for the chopped cheeses.
To find the total of lunch, add the prices for the slices and cheeses together:

The total cost for lunch is 7x+8
:Done