12, 14, 17, 18
What is the mean?

The mean is 15.25.

Step-by-step explanation:

First, we need to be sure we know that the mean is the average number in the group of numbers. That doesn't mean the most repeated or the number in the middle. Simply, the average.

To find the mean of a group of numbers you simply add them all together and divide by the number of numbers. So, let's solve.

12 + 14 + 17 + 18

= 61 ÷ 4

= 15.25

So the mean of 12, 14, 17, and 18 is 15.25.

Hope this helps! If you have any additional questions please don't hesitate to ask me or your teacher to be sure you master the subject. :) Stay safe and please mark brainliest!

5 feet of chain cost $9

so the answer is 1.80