A function is given below. Determine the average rate of change of the function between x = -3 and x = -3 + h. f(t) = √-7t

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I have \[\sqrt{-7h}/h\] but it says that is wrong and I can't figure out why

Well, the 'average' rate of change for some interval \([a,b]\) (non-calculus, please tell me if you need otherwise) would be: \[ \Delta f_{avg}=\frac{f(b)-f(a)}{b-a} \]Try using that.

This is pre-calc

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