Question

paul earns 25.50 for every lawn he mows. this week he moved L lawns. he spends 3.50 per lawn on gasoline. write an expression to describe his earning and spending, where L is the number of lawns mowed?

Answer 1

If Paul mows the lawn once, he earns 1*25.50.  If he mows it twice, he earns 2*25.50, and so on.  So, he earns L*25.50.  But, he spends 3.50.  So the equation is:

$L*25.50-3.50$