F (x) = x^+4x+2 what is the average rate of change from x=3 to x=5

12

Step-by-step explanation:

f (x) = x^+4x+2 First, let's evaluate when x=3, x=4 and x=5.

f (3) = 3²+4 (3) + 2 = 9 + 12 + 2 = 23

f (4) = 4²+4 (4) + 2 = 16 + 16 + 2 = 34

f (5) = 5²+4 (5) + 2 = 25 + 20 + 2 = 47

Now, let's find the rate of change.

34 - 23 = 11

47 - 34 = 13

Finally, the average rate of change.

(11 + 13) / 2 = 12