### Home > CALC > Chapter 11 > Lesson 11.3.2 > Problem 11-113

11-113.

The table below shows the total number of hamburgers sold at various points of the day for a popular fast food restaurant. Homework Help ✎

time

*t*9

11

12

1

2

4

5

7

hamburgers

*h*3

39

81

251

341

498

611

894

Approximately what rate were hamburgers being sold at 10 a.m.? 4 p.m.?

When was the rate of sales greatest?