Linh has a bag of beads that contains $10$ glass beads, $7$ metal beads, $15$ plastic beads, and $3$ clay beads. For each part below, if the bead selected is replaced before the next draw, what is the probability that Linh will pull out a: 2-78 HW eTool  

1. Metal bead?

   Step 1 (a)

   Determine the number of beads in the bag.
   $\text{Total number of beads}=35$

   Step 2 (a)

   Divide the number of metal beads by the total number

   $\frac{7}{35}$

   Answer (a)

   $\frac{7}{35}=\frac{1}{5}$

2. Bead that is not plastic?

   Hint (b)

   Use the same method as part (a).

   Answer (b)

   $\frac{20}{35}=\frac{4}{7}$

3. Glass or plastic bead?

   Hint (c)

   Use the same method as part (a).