Algebra
# System of Linear Equations

Brenda has 2 Facebook stocks and 1 Twitter stock, and her portfolio is worth $250.

Candice has 3 Facebook stocks and 1 Twitter stock. How much is her portfolio worth?

On Black Friday,

Joel bought 1 phone and 1 PS4 for $500, and

Kelvin bought 2 phones and 2 PS4's for $1000.

Linus bought 2 phones and 1 PS4.

Can we determine how much Linus paid?

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