Emily wants to buy turquoise stones on her trip to new mexico to give

  

Emily wants to buy turquoise stones on her trip to New Mexico to give to at least 4 of her friends. The gift shop sells stones for either $4 or $6 dollars per stone. Emily has no more than $30 to spend.
 

a) Make a graph showing the numbers of each price of stone Emily can purchase.
b) List 3 possible answers.