Question 13 Details Find the average rate of change of the function f(x) = log(2 + 4 . x). You can enter the function into your calculator and use the table feature to find the output values you need. You MUST show your set up for each average rate of change using appropriate function notation. Average rate of change on the interval & ( [3,6] = Give at least 4 decimals in your answer. Average rate of change on the interval i E [6,11].= Give at least 4 decimals in your answer. Since the average rates are | Select an answer | and the concavity of the logarithmic function does not change we know that f(x) = log(2 + 4 . x) is concave Select an answer v