Is that supposed to be x squared, or x times 2 in the beginning of the first one?
Answer
The answer is 567
Step-by-step explanation:
189*3=567
Part a: Option D 18 feet per second
Part b: increasing
Solution:
Height 
Part a: To find the average rate of change for h(t) between t = 0 and t = 2.
Substitute t = 0 in h(t).

h(0) = 3
Substitute t = 2 in h(t).
h(2) = 39
Average rate of change formula:

Here, a = 0 and b = 2.



= 18
Average rate of change = 18 feet per second
Option D is the correct answer.
Part b:
This means height of the ball is increasing for 0 < x < 2.
987,164.302
0: hundredths
1: hundreds
4: ones
3: tenths
6: tens
9: hundred thousand