The twenty-six coins are all dollars and quarters, and they add up to seventeen dollars in value. how many dollars and how many quarters are there? need answer asap

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)

I’m really confused and need your assist me with this question i’ve never been taught