Let's look at the question:
Write the product of the quantity 4 less than triple a number and the quantity 5 more than 2 times a number.
4 less than 3 times a number
4 - 3 * n
5 more than 2 times a number
5 + 2 * n
Now we have to write this problematic question as a product:
(4 - n3) * (5 + 2a) (Dont forget the parenthesis!)