Equation P: x + y = 8 Equation Q: 2x + 5y = 24
Which of the following steps can be used to eliminate the x term?
2(x + y = 8)
0 -2(x + y = 8)
O-1(2x + 5y = 24)
-2(2x + 5y = 24)

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters