Jamari has saved $30. He got a summer job walking dogs, and gets $8 for every
dog he walks.
In order to write an expression that represents the total amount of money Jamari
has, start by representing that he earns $8 for each dog he walks. Let d represent
the number of dogs Jamari walks.
x is the money he has or will have and he starts off with 30 and earns 8 dollars per dog he walks, so 8d means he earns 8 times the amount of dogs he walks