15 and 21. From 1 to 3 is plus 2 and from 3 to 6 is plus 3 and from 6 to 10 is plus 4 and so on
Answer:
13.1
Step-by-step explanation:
HE RIDES 13.1 miles in 5 days
You multiply 2.6 times 5 which equals 13.1
13.1 for 5 days
Answer:

Step-by-step explanation:
Given
--- Population
-- Mean
--- Standard deviation
-- Sample
Required: 
This question will be solved using the finite correction factor
First, calculated the z score






So:

Using z table


Are you trying to solve the function operation? If so, your solution is 4 I believe. I don't really have a lot of info on this, but I hope this helps. If not, feel free to comment below and I'll see what I can do to help you further on this. Thanks and good luck!
36 x 3/9.
3/9 = 0.33
0.33 x 36 = 12