Please help I’ll give brainliest

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)

What is the rate for one gallon of gasoline