### Home > APCALC > Chapter 4 > Lesson 4.2.3 > Problem4-71

4-71.

Keily put his dog on a diet! If $f\left(t\right)$ represents pounds lost per day and $t$ is measured in days, what does$\int _ { a } ^ { b } f ( t ) d t$ represent? What are its units?

'pounds lost per day' is a rate.

What does the area under a rate graph (such as a velocity graph) represent? What will it represent on Keily's graph?