Domain : 
Range: 
Explanation:
It is given that Bev earns $2 a week.
Thus, for n number of weeks, we shall multiply $2 with n.
Where
is the number of weeks.
For 1 week, Bev earns
⇒ $2
For 2 weeks, Bev earns
⇒ $4
For 3 weeks, Bev earns
⇒ $6
For 4 weeks, Bev earns
⇒ $8
Thus, we can see that the domain is the number of weeks.
Hence, Domain : 
Also, the money earned is the range.
Hence, Range: 