Posted by **Mel <3** on Sunday, October 12, 2008 at 12:20pm.

Find the interval(s) where the function is increasing and the interval(s) where it is decreasing.

f(x) = 3x + 5

ok...i think you find the derivative first...? but i thought u had to find the critical points somehow... i am so lost! can someone show me how to do this problem? PLEASE! :)

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