If the height of a falling object after a certain amount of time is given by the equation h=−16t^2 +500, which of the following is true? A.) t must be greater than or equal to 16.

B.) t must be greater than or equal to 0.

C.) h must be greater than or equal to 500.

D.) h must be less than or equal to 0.

On saturday morning, calls arrive at ticketmaster at a rate of 108 calls per hour. what is the probability of fewer than three calls in a randomly chosen minute?

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.