Answer:

Explanation:
Let E be the total earnings .
Cost of mowing 1 lawn = $60
Since he mowed l lawns
So, cost of mowing l lawns =

So, he earned

Now we are also given that he spent $395 gathering necessary materials.
So, the total earnings for l lawns mowed =

So, required expression :

Hence an equation to show Moche his earnings for l lawns mowed is :
