Literal equations k= ap/2 solve for a

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

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

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)