Step 1
Assign a letter to the cost of each product
Cost of hamburger = x
Cost of hotdog = y
Step 2
Write a formula identifying how much of each product you are purchasing, and the final cost.
2x + 3y = 19.05
Step 3
Substitute the cost of a hamburger into X
2 × (5.25) + 3y = 19. 05
Step 4
Rearrange for y (cost of hotdog)
10.5 + 3y = 19. 05
3y = 19.05 - 10.5
3y = 8.55
y = 8.55 / 3
y = 2.85
So the cost for 1 hotdog is $2.85
I hope this helped, If you have any questions, feel free to ask
