Answer:

Domain: 
Step-by-step explanation:
Given

Required
Determine f(x) and its domain
To determine f(x), we replace 5x with x in f(5x)
So, we have:


Take LCM



To get the domain, we set the denominator as



23 1/8
(7+15) + (1/4 +7/8)
22 + 2/8 + 7/8
22+ 9/8
23 1/8
Jim's time is 5:50 and John's time is 6:40.
Well you add the total of championships. 15+7+7+6+4+2=41
The ratio is 6:41
This means that Australia won 6 of the 41 championships.