### Home > APCALC > Chapter 11 > Lesson 11.3.2 > Problem 11-98

11-98.

The table below shows the total number of hamburgers sold at various times during the day for a popular fast food restaurant. Assume the function used to model the data in the table is a continuously increasing function. 11-98 HW eTool (Desmos). Homework Help ✎

Time | 9 a.m. | 11 a.m. | 12 p.m. | 1 p.m. | 2 p.m. | 4 p.m. | 5 p.m. | 7 p.m. |

Hamburgers | 3 | 39 | 81 | 251 | 341 | 498 | 611 | 894 |

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

For what time interval was the rate of sales greatest?

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