Match each table of data below with the most appropriate graph and briefly explain why it matches the data.  

1. Boiling water cooling down

   Time (min.)	$0$	$5$	$10$	$15$	$20$	$25$
   Temp. ($°$C)	$100$	$89$	$80$	$72$	$65$	$59$

   More Help (a):

   Determine if the $y\text{-values}$ are increasing or decreasing.

   Answer (a):

   Since the numbers for the $y\text{-axis}$ are decreasing, the only graph which fits is Graph $3$.

2. Cost of a phone call

   Time (min.)	$1$	$2$	$2.5$	$3$	$4$	$5$	$5.3$	$6$
   Cost (cent.)	$55$	$75$	$75$	$95$	$115$	$135$	$135$	$155$

   More Help (b):

   Are the $y\text{-values}$ increasing at a constant rate?

   Answer (b):

   This could be Graph $1$ or Graph $2$, but the table would not contain the point $(0,0)$, so it must be Graph $2$.

3. Growth of a baby in the womb

   Age (months)	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$	$9$
   Length (inches)	$0.75$	$1.5$	$3$	$6.4$	$9.6$	$12$	$13.6$	$15.2$	$16.8$

   Hint (c):

   Identify the pattern of how the length increases.

   Answer (c):

   Graph $4$ fits best.