Complete Question
The complete question is shown on the first and second uploaded image
Answer:
a
[tex]z = 6.25 \ cm/yr[/tex]
b
[tex]k = -0.25 \ cm /yr[/tex]
Step-by-step explanation:
From the first image the rate of rate of change of the height from age 8 to 16
is mathematically evaluated from the graph as
[tex]z = \frac{175 - 125}{16-8}[/tex]
[tex]z = 6.25 \ cm/yr[/tex]
From the first image the rate of rate of change of the height from age 60 to 80.
is mathematically evaluated from the graph as
[tex]k = \frac{175 - 170}{60-80}[/tex]
[tex]k = -0.25 \ cm /yr[/tex]
