Write a number in the box to make this number sentence true. ÷ (9 + 3) = 2 what is the answer

What is the solution to the equation 9^(x+1) =27

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box