Answer:
2.5 hrs
Step-by-step explanation:
first you have to divide the number 12.5 and 5 because it says at the speed of 5 miles per hour. So when you do 12.5 divided by 5 it equals 2.5.
There are 7,315 different combinations, thus, the correct option is c
<h3>
How many combinations are there?</h3>
If we have a set of N elements, the number of different combinations of K elements (such that K ≤ N) of these N elements that we can make is:

In this case we have K = 4 and N = 22, replacing that, we get:

So there are 7,315 different combinations, thus, the correct option is c.
If you want to learn more about combinations:
brainly.com/question/11732255
#SPJ1
Answer:
6
Step-by-step explanation:
21, 23, 25 so 21 is the smallest odd number :)
Answer:
Portable Document Format.....