Answer: Brady sprayed 11 quarts of fertilizer
Step-by-step explanation:
Given : Brady buys 3 gallons of fertilizer for his lawn.
Since 1 gallon = 4 quarts
Then, 3 gallons = [tex]4\times3=12\ \text{ quarts}[/tex]
After he finishes spraying the lawn he has 1 quart of fertilizer left over.
Then, the number of quarts of fertilizer Brady sprayed on the lawn
= Quarts of fertilizer bought - Quarts of fertilizer left
=12-1=11 quarts
Hence, Brady sprayed 11 quarts of fertilizer .