Answer:
y = 2 x 2 + 2 x + 4 should be the function.
Explanation:
The last one can be anything, it said to predict so basically guess. From what I read from the graph, the y ( number of fruit flies ) doubles.
4 + 4 = 8
8 + 8 = 16
16 + 16 = 32
32 + 32 = 64
I'm sure your able to catch on.
I put a photo of the graph for your sketch, if you need help labeling then you can ask me :)