What element in domain has the image 7 under the function f(X)=x^3+1​

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30

What rotation was applied to triangle def to create d’e’f’?

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