Let f(x)=ln(3x)+2.5 .

What is the average rate of change of f(x) from 2 to 7?

Round your answer to the nearest hundredth.

−3.99

−0.25

0.25

3.99

Guest Mar 20, 2018

#1**0 **

You can use desmos.com/calculator to graph the function. It helps a lot when you need to visualize.

Looking at the graph, when x = 2, y = 4.25, but when x = 7, y = 5.5.

Calculating the rate of change is like calculating the slope.

(5.5-4.25)/(7-2)

This is equal to 0.25.

The final answer is 1/4

supermanaccz
Mar 21, 2018