Respuesta :
Well if there is 5 trophies on 3 shelves then the first thing you should know is that you have to multiply. So.. 5*3 Then the next thing is that Paul has 2 more trophies on another shelf. So you add those two trophies on to the expression. 5*3+2. ...Hope this helps :)
(5 times 3) + 2 that's because he has 5 trophies in 3 selves so we multiply 5 times 3. Then we add 2 so the answers 17