How to solve this? (2+x)(1-x)+2x+(x-2)squared

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Point r divides in the ratio 1 : 3. if the x-coordinate of r is -1 and the x-coordinate of p is -3, what is the x-coordinate of q? a. b. 3 c. 5 d. 6 e. -9

Which of the following vectors are orthogonal to (2,1)? check all that apply