Eric has a dog walking business. He charges $13 per dog he walks and $6 for the water he buys for the dogs. If he made $97 on Monday, write an equation to find the number of dogs he walked on Monday.
13+6(d)=97 Each dog Eric walks is 13 plus 6 dollars for water. He earns 97 dollars buy you don't know the amount of dogs so d=dogs. You need to multiply the amount if dogs to the amount of money Eric earns.