Step-by-step explanation: So if u have 5 notebooks then the price is gonna be 3$ u want to multiply 3$ by 5 then u will get 15$ that is the answer for that one then if u do that same thing for rulers u will get 6$ then that is for that one now if u do the pencils there are 10 and they cost $1.20 so do that and u get 6$ so now if u do the the markers u will get 10$ now if u add them Altogether u will end up with 37$.