Answer:
Step-by-step explanation:
look for the pattern to make these ratios
you just need to multiply by 2 to get the right answer
1 2
8 16
13 26
14 28
45 90
67
there are 6 birds and you add 7 and this is what you get
The answer is 8x^6 - 27y^6
Percentage change is 25%