Please solve the following question.

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

An ant travels at a constant rate of 30cm every 2 minutes.at what speed does the ant travel per minute

The perimeter of an equilateral triangle is 4 cm more than the perimeter of a square and the length of a side of the triangle is 8 cm more than the length of a side of the aware. find the length of a side of the equilateral triangle