Solving Heat Capacity Problem: 60K to 80K

[Pete_01]

Homework Statement

In the temperature range from 60 K to 80 K, a certain amount of liquid has a
temperature dependent heat capacity that is given by Cp = 20 J K−1 + T × 0.5 J K−2.
Determine the entropy change resulting from heating this sample from 60 K to 80 K.

Homework Equations

C=q/deltaT

The Attempt at a Solution

This one is confusing me. How does the temperature dependent heat capacity fit in, when the temperature is a range (60-80k)? Also, what equation should I use?

 

[Borek]

I guess you should integrate.