Identify the unit rate in the graph earnings 10 20 30 40 50 hours 1 2 3 4 5 letter a $15 letter B $27.50 letter c $22.50 letter d $45

The unit rate in the graph can be identified by dividing the earnings by the hours.

For letter a, the unit rate is $15/hour.
For letter B, the unit rate is $27.50/hour.
For letter c, the unit rate is $22.50/hour.
For letter d, the unit rate is $45/hour.