The ball's velocity will be represented by the derivative of its distance function:

Now find the times 

 for which this is equal to 30, i.e. solve

This has two solutions, 

, but only one is positive and falls in the interval 
![[0,3]](https://tex.z-dn.net/?f=%5B0%2C3%5D)
. So the velocity reaches 30 cm/s when 

.
 
        
        
        
Answer:
The number of degrees the temperature drops°
Step-by-step explanation:
 
        
             
        
        
        
You can divide 110 by 1 to see how many 1's go in 110:
110/1 = 110
This means that there are 110 1's in 110.
Hope this helps! :)