back O 112 What is the average rate of change of the function y = 4x3 - 2 between x = 2 and x = 4? O -112 110 O -110back True or false? O True If f(x) is a differentiable function and g(x) = If(x)]1/", then dg ~ If(2)]-(n-1) df O False daback O -260.4 hours The temperature begins to drop on a winter day in Maine as a cold front moves in. The O 260.4 hours temperature is given by the function O -1.9 hours T(x) =12- 1 12 5x, where a is the time in O 1.9 hours hours and T (x) is the temperature in Fahrenheit. Given that T' (x) = - 5 12 ", when will the temperature be falling at a rate of 5 degrees per hour