Create an equivalent system of equations using the sum of the system and the first equation. -3x + y = 12
x + 3y = 6

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Drag the tiles to the correct boxes to complete the pairs. label each function. as even , odd, or neither.