Answer: 3.5 seconds
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At the bottom of the table, we have x = 2.5 seconds correspond to f(x) = -1 and g(x) = 5
Notice how f(x) is increasing by 2 while g(x) is decreasing by 1, each time we move down a row (which bumps x up by 0.5). This means that when x = 3, f(x) = 1 and g(x) = 4. Then when x = 3.5, f(x) = 3 and g(x) = 3, so f(x) = g(x) at this point. When x = 3.5 seconds, the two animals are in the same position.
