# Average rate of change

Find the average rate of change of a function over a given interval.
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### Problem

h, left parenthesis, t, right parenthesis, equals, left parenthesis, t, plus, 3, right parenthesis, start superscript, 2, end superscript, plus, 5
What is the average rate of change of h over the interval minus, 5, is less than or equal to, t, is less than or equal to, minus, 1?