I don't know if this is the ans.u2+14-28=0
Answer:
5
Step-by-step explanation:
The tip would increase by $0.44. If you find how much the tip would be originally and compare it to the tip after the coupon is used, it would be $9.76 - $9.32 = $0.44. Richards method would give an extra $0.44 as a tip.