What fraction does the total area shaded in green below represent?

1 3/6

Step-by-step explanation: A whole Hexagon is colored in which makes 1 whole and  a half of the other hexagon is full which makes 3/6

So the second hexagon has 6 pieces and 3 shaded , which equals 1/2 . 1 1/2 is your answer

If it take  some x  minutes to upload  some y  digital photographs, it means it has an average of: x/y minutes to upload a single digital photograph. Then, to upload z photographs, you just multiply   x/y   by z.

Spoilers for
If it take 7.2 minutes to upload 8 digital photographs, it means it has an average of: 7.2/8 = 0.9 minutes to upload a single digital photograph. This means that, by this rate, it will take 20 * 0.9 = 18 minutes to upload 20 photographs to the website.