Level 2 Choose whether you would use substitution or elimination to solve the following systems of equations and why. 1. x-2y=-7 2x+5y = 8 3. x = 4y+6 2x+y=2 2. 5x-3y=16 3x+6y= 18 4. 2y=-4x-14 2x + 10 = y Choose whichever method you want to use to solve the following problems. 5. Sharon has three times the money saved as Robert. Together, they have $80. How much do they each have? 6. Rebekah and Mohammad have $125 saved up already with their clothing business. For every shirt they sell, they make $12 and for every hat they make $9. How many of each did they sell if they sold 22 pieces of clothing and their total saved at the end of the day is $350, including the savings they started with?