Will mark brainliest which expression is equal to (f + g) (x)? f(x) = x^2 + 3; g(x) = x - 1 a x^2 + x + 2 b x ^3-3 c x^3-x^2 + 3x -3 d x^2 -2x +4

Sandy is upgrading her internet service. fast internet charges $20 for installation and $52.45 per month. quick internet has free installation but charges $57.45 per month. part 1 out of 2 complete the equation that can be used to find the number of months after which the internet service would cost the same. use the variable x to represent the number of months of internet service purchased.