Please help i have no clue how to find the answer any tips appreciated :)

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is

Masons cell phone company charges $0.12 for every text message he sends plus $2.50 per month if mason sent 25 messages this month how much money does he owe the one with the correct answer and explanation gets 10 points and is marked as the brainliest answer

If the alternate hypothesis of an experiment is “the true mean height of the giraffes is more than 15 feet” what is the null hypothesis?