Answer :
C : $55 x w = $605
w = 11 , Heidi needs to sell 11 diamond rings to earn $605 .
Because she gets $55 every time she sells a ring, w the amounts of rings she sells should be multiplied.
w = 11 , Heidi needs to sell 11 diamond rings to earn $605 .
Because she gets $55 every time she sells a ring, w the amounts of rings she sells should be multiplied.