The range of which function is (2.oo)?
y = 2x
y = 2(5x)
y=5X +2
y = 5x + 2
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The 2 is not in the exponent.

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Explanation:

As x gets smaller and smaller, going off into the negative direction forever, the expression will approach 0. This is because we're computing stuff like 5^(-1) = 1/5 = 0.2 and 5^(-2) = 1/25 = 0.04 and so on. The decimal values are approaching 0 but never actually arrive there. The range of is

Adding on the 2 at the end will shift everything up so that the range is now . Refer to the graph below.

The parenthesis in interval notation mean we do not include that endpoint as part of the set. Saying something like is the same as saying when talking about the range.