25^9+5^17=
=2^18 +5^17
=5^17(5+1)
=5^17· 6
=5^16 ·30 is divisible by 30
The mean is the average. You calculate it by adding all the numbers up in the data set and divide by how many numbers there are in the data set.
So:
10h + 100 , because the hosted represents the flay rate and every hour ten dollars is added
The answer is the 3rd one:)