Answer:
Equation in cubed form is x^3+7x^2+7x-15
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
First add 20 to both sides to get x/3 = 5
Then multiply both sides by 3 to get 15.
You can check it by substituting it into the equation
15/3 - 20 = -15
5 - 20 = -15
-15 = -15
30 dolls.
You can get this by multiplying the number in 20% by 5, which would get you to 100% and 30.