Which graph has a rate of change of zero?

Step-by-step explanation:

The first line is:

It has undefined rate of change

The second line is:

It has rate of change of zero (no change in y-value for any x-value)

Here, the rate of change is not defined.

Here, the rate of change is zero .i.e., y is independent of x.

Therefore, 2nd graph has a rate of change of zero.

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.