For every lawn Cambridge mows he earns 16.50 USD, knowing this we now know the unit rate. The unit rate is (1,16.50).
Answer:

Step-by-step explanation:
Given


Required
Determine the scale
The scale is calculated using the following ratio:

Substitute values for Scale and Actual Measurements

Divide ratio by 20.5


This implies that: <em>1 inch on scale represents 8 ft in actual measurement</em>
Add the 7 and 4, which =11.
multiply times the 5, =55
and 20-55= -35