Q1: List all printers maker, model and price. Display the highest price on the top (Hint: order by)

Q2: List each product type (pc, laptop, printer) and the number of models of each type. You should only have one row for each type with the corresponding count (Hint: group by).

Q3: List every products model, maker, type and screen (the actual data if it is a laptop; null if not) (Hint: left join)