Each of the continuous functions in the table below is increasing, but each increases differently. Match each graph below with the function that grows in a similar fashion in the table.  

1. 

   Hint (a):

   Graph (a) is linear. Straight lines grow at a constant rate. Which function on the table is growing at a constant rate.

2. 

   Hint (b):

   Graph (b) is increasing (the $y$-values are going up), but it is getting less and less steep as it increases. Which function is getting less and less steep?

   Hint (b):

   Steepness can be determined by rate of change: $\frac{\Delta y}{\Delta x}$

3. 

   Hint (c):

   Graph (c) is increasing (the $y$-values are going up), AND it is getting more and more steep as it increases.