[Related to the Apply the Concept on page 112] The Apply the Concept states that the value of the area representing consumer surplus from Uber’s service was $2.88 billion per year for the four cities...

[Related to the Apply the Concept on page 112] The

Apply the Concept states that the value of the area representing consumer surplus from Uber’s service was $2.88 billion per year for the four cities involved in the study. Use

the information from the graph in the Apply the Concept

to show how this value was calculated. (For a review of

how to calculate the area of a triangle, see the appendix to

Chapter 1.)