Oliver has music lessons on monday, wednesday, and friday. each lesson is 3/4 of an hour. oliver says he will have lessons for 3 1/2 hours this week. without multiplying, explain how you know oliver is incorrect.

Automatically we know that he is wrong  because even if we round it to make it a friendly number (lets say 1)  it will still not equal 3 1/2
he has them for 3 1/2 days

even 1+1+1= 3  it still isnt enough and you arent even supposed to round

That is why he is wrong :) hope this helped