How do you write 21% as a fraction, mixed number, or whole number?

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?

Write the factored form of this trinomial 9x^2+18x-7

Ben works in his dads bakery packing bagels each package can have no more then 16 bagels 3/4 of the bagels in each package are plain what other fractions could represent the part of the bagels in each package that will be plain