Answer? i need help asap

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

The table below shows the function f. determine the value of f(3) that will lead to an average rate of change of 19 over the interval [3, 5]. a. 32 b. -32 c. 25 d. -25