ritvik tosses a ball from where he stands on a balcony to his friend on the ground. the height, in feet, of the ball can be represented by the function d(t) = 16t to the power of 2 + 16t + 9 where t represents time in seconds. part a: from what height was the ball tossed? part b: what is the maximum height of the ball. part c: how long does it take the ball to reach its maximum height?

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.

Which of the following graphs could represent a quartic function?