Sydney's dad helps her invest in the stock market. She gives her dad $12 and asks him to invest it in
bicycles. The next month her dad cashes out her
stocks and gives Sydney $24 back. What
percentage of money did she make?

11

step-by-step explanation:

32.50-7.50=25

225/25=11

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: