Answer:
The hiker's elevation after 145 minutes will be 1958 meters.
Step-by-step explanation:
The equation of the trend line of the scatter plot showing a hiker's elevation is y = 8.77x + 686 .......... (1), where x is in minutes (say) and y is in meters (say).
Now, we have to predict the hiker's elevation after 145 minutes.
So, from equation (1) we get, y = 8.77 × 145 + 686 = 1957.65 ≈ 1958 meters. (Answer)
Answer:
correct value of x = 5
Step-by-step explanation:

I answered both questions and explained it. hope it helps :)
Complete Question
The complete question is shown on the first and second uploaded image
Answer:
a

b

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


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

