Factor out the greatest common factor. 28 x squared plus 8 x

4x(7x + 2)

Step-by-step explanation:

28x^2 + 8x =

= 2 * 2 * 7 * x * x + 2 * 2 * 2 * x

The common factors are shown above in bold. They are 2, 2, x.

2 * 2 * x = 4x. The greatest common factor is 4x. You factor 4x out of both terms.

= 4x(7x + 2)

  b.   the average rate of change of f(x) is less than the average rate of change of g(x).

step-by-step explanation:

since the length of the interval is the same in each case, we only need to compare the change in y-value to see which is greater.

so the change in y-value for function f is (6 )) = 9.

the table tells us

so the change in y-value for function g is (31 -1) = 30.

the change in y-value of f(x) on the interval is less than the change in y-value of g(x) on the same interval, so the average rate of change of f(x) is less than the average rate of change of g(x).