Study the pattern of dots at right.

1. Draw the $3$^rd and $5$^th figures.

   Partial Answer (a):

   $\array{ \begin{array}{c c c c c} \\ \bullet& \bullet \\ \bullet& \bullet\\ \bullet & \bullet \\ \end{array}\\ \text{Figure 3} }$

   Remember to draw Figure 5.

2. How many dots will there be in the $50$^th figure?

   Hint (b):

   How many dots will Figure 0 have? How many dots are added each time?

3. Is there a figure that will have exactly $38$ dots? If there is, which figure is it?

   Hint (c):

   What plus $3$ is equal to $38$?

   Answer (d):

   Figure 35 will have $38$ dots.