Well, she has $28, and wants to get a loan for a pair of shoes. That means she will have negative money in her account. This is because $45 is greater than $28 and the $28 is the one being taken from. This leaves the answer to be $-17.
You would have 60 different types of pens with this brand. You need to multiply 12 and 5 (because you have 12 different colors for every type of tip, so you have 5 groups of 12).
