5n = 10^2
n = 20 Because 5 × 20 = 100
There as 16 cards, 2 of which are wildlife cards, so the ratio is 16 : 2. We can simplify it by dividing both sides by 2, so we'll get the ratio of 8 : 1.
I hope this helps! :)
The answer is 2 because the d/f is -5 so the term is bigger than 7