Respuesta :
					                   6 dogs $20 each is $120 per day. $120 per day times 5 is $600.
 
 3 dogs $20 each is $60 per day. $60 per day times 7 is $420.
 
 $600+ $420 is $1020 per week.
 
 $1020 - $350 is $670 profit per week after expenses.
					                
					                
					             Answer:
David earns $1,020 a week, and his weekly profit is $670.
Step-by-step explanation:
Since David walks six dogs per day, and each dog is $20, he earns a total of $120 per day from those six dogs. Also, knowing that he walks the six dogs five days a week, he earns $600 from walking the six dogs for five days per week alone. Using this same logic for the three dogs he walks seven days a week, we can conclude that he gets $60 from walking those three dogs. Knowing he walks those three dogs seven days a week, he gets $420 from walking those three dogs. Combining the totals gives us $1,020, the amount of money he earns per week. Since his weekly expenses are $350, we subtract that from $1,020 to get his weekly profit: $670.
 
			                   
					                  