A) 1
B) 2.5
C) 4
D) 9
ill mark brainliest if correct

B) 2.5

Step-by-step explanation:

To find the rate of change you need to find the slope.

Slope is Rise over Run (Rise/Run)

How many times do you need to rise to get to the same height of the point of 2? 5 times

Next how many times do you need to run to get to the same length of 2? 2

Rise=5 Run=2

5/2 or 2 1/2

And since 1/2 is the same as 0.5 we can replace the 1/2 as 0.5 and the answer will be 2.5

Hope this helps!

sine

step-by-step explanation:

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.