Use the elimination method to solve each linear system.

1) 2x-9y=-55 and x+2y=18

2) 3x+2y=7 and 6x-6y=-6

3) 6x+10y=2 and 7x+4y=-13

4) 3x+2y=5 and x-2y=-1

Abby mixes cinnamon and nutmeg to make 25g of a spice mix. Cinnamon costs 9 cents per gram, and nutmeg costs 12.5 cent per gram. The spice mix costs 9.7 cents per gram. How much of each spice does Abby need to use?

Answer:Step-by-step explanation: