Dr. Phil can fill $2$ cavities every $21\dfrac14$ minutes.
**Complete the table to see how many minutes it would take him to fill $4$ cavities and $8$ cavities.**
| | ||
- | :-: | :-: | :-:
Minutes| $21\dfrac14$ |[[☃ numeric-input 1]] | [[☃ numeric-input 2]]
Number of cavities | $2$ | $4$| $8$