The second one because the answer to the first one is a two digit number and the answer to the second is a one digit number, so #2 only uses two 2-digit numbers
Answer:
B. Average of the data set
Step-by-step explanation:
The mean is defined as the average of a data set and it's formula is
Mean = 
Answer:

Step-by-step explanation:
*
=
= 
Answer:
Let Y represent Years. (300 x Y) + 15000.
Step-by-step explanation: Well, 2 percent of 15000 is 300, so per year the populations increases by 300 people.