A person is standing on a second-floor balcony drops keys to a friend standing below the balcony. The keys are dropped from a height of 10 feet. The height in feet of the keys as they fall is given by the function h(t) = 16t2 + 10, where t is the time in seconds since the keys were dropped. The friend catches the keys at a hight of 4 feet. Find the elapsed time before the keys are caught.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

You love to play soccer! you make a shot at the net 8 times during a game! of those 8 attempts, you score twice. what percent of the time did you score?

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?