Answer:
.4625
Step-by-step explanation:
To find the mean, add up all the numbers, then divide by the number of terms
(0.2 +0.4+ 1+ 0.25) /4
1.85/4
.4625
Step-by-step explanation:

<h2>METHOD 1.</h2>

<h2>METHOD 2.</h2>

<h2>METHOD 3.</h2>

<h2>METHOD 4.</h2>

I’m assuming you mean there are 5 rows which are equal, and use all the 115 photos. If this is the case then 115/5 is 23 photos per row.
3000/100 = 30. When you go from Centimeters to Meters you divide by 100.