If you have $10 with which to buy some pens for $1.75 each, how many can you buy?

You can buy 5 pens.

10/1.75 = 5.714, but you can’t buy 7 tenths of a pen. So you have to round down to 5.

10/75=5. So you can buy 5 with ten dollars

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.