Answer:
We have this proportion....
36 / 12 = x / 9 where x is the model door height
Cross-multiply
36*9 = 12 * x
324 = 12 *x divide both sides by 12
27 = x and that's the model height in centimeters
2 degrees / hour
Explanation:
The average rate of change is
f(x2) - f(x1)
---------------
x2 -x1
We know that x2 is 6pm so f(x2) is 101
We know that x1 is 10 am so f(x1) is 85
101 -85
--------------
6 pm - 10 am
16 degrees
8 hours
4.6m questions
5.9m answers