Help me solve this for 50+ brainliest points plz plz answer correctly

About 400,000 people visited an art museum in december. what could be the exact number of people who visited the art museum?

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost