You are doing chores to earn your allowance. For each chore you do, you earn $\$3$. In the graph below, $c$ is the number of chores you do, and $d$ is the number of dollars you earn.
The relationship between these two variables can be expressed by the following equation:
$d=3c$.
**Complete the table for the missing values of $d$.**
$c$ | $d$
:-:|:-:
$1$ | $3$
$2$ | $6$
$3$ | [[☃ input-number 1]]
$4$ | [[☃ input-number 2]]
