We have the following situation:
1. Kaylin bought a soda and two bags of popcorn for $3.00, and we can represent it as follows:
• Let s be the cost per soda (one variable):
,
• Let b be the cost per bag of popcorn (the other variable):
[tex]1s+2b=3.00[/tex]
2. Her brother bought three sodas and a bag of popcorn for $6.50. Using the same variables, we have:
[tex]3s+1b=6.50[/tex]
3. Now, we can solve this system of equations by substitutioh
