john and 2 friends are going out for pizza. They split one pizza and 3 drinks. The pizza costs 14. after using a 7 dollar coupon, they spend a total of 12.10 write an equation to model this situation find the cost for one drink

Question

john and 2 friends are going out for pizza. They split one pizza and 3 drinks. The pizza costs 14. after using a 7 dollar coupon, they spend a total of 12.10   write an equation to model this situation  find the cost for one drink

anonymous · Answer

14x+1.70y - c =Total

Where x=the number of pizzas and y=the number of drinks and c is the coupon (assuming there is no tax).

zepdrix · Answer

p=a pizza
d=a drink

  p + 3d -7 = 12.10    <-- 1 pizza + 3 drinks - coupon = total bill
14 + 3d -7 = 12.10
3d + 7        = 12.10
            3d  = 5.10
              d  = 1.70     <-- cost for 1 drink.