Respuesta :

The answer should be 1.80

Answer: I think its 0.60?

Step-by-step explanation: I'm in middle school so i rlly don't know but i believe the cost for the pen after the discount would be $3.90 as 4.50 - 0.60 = $3.90 and 60% can be turned into a decimal as 0.60

hope this helped...