### Home > MC1 > Chapter 8 > Lesson 8.1.1 > Problem8-14

8-14.

Study the pattern of dots at right.

 $\array{ \begin{array}{c c c c c} & \bullet \\ & \bullet\\ \bullet & \bullet \\ \end{array}\\ \text{Figure 1} }$ $\array{ \begin{array}{c c c c c} & \bullet \\ \bullet& \bullet\\ \bullet & \bullet \\ \end{array}\\ \text{Figure 2} }$ Figure 3 $\array{ \begin{array}{c c c c c} \bullet\\ \bullet& \bullet \\ \bullet& \bullet\\ \bullet & \bullet \\ \end{array}\\ \text{Figure 4} }$ Figure 5

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

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

Remember to draw Figure 5.

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

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?

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

Figure 35 will have $38$ dots.