Write a function t(I) that determines the number of
toothpicks in any given level of the pyramid.

Using the table, we will see that the function is:
t(l) = 3*l
Here we only have a table to work with, so we need to use that.
In the table, we can see the pairs:
So, in each new level, we just add 3 more toothpicks. Even more, we can see that the number of toothpicks is 3 times the value of l (the level) for all the cases in the table. So this is a linear function.
From that we can conclude that the function will be:
t(l) = 3*l
If you want to learn more about linear functions, you can read:
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