Emma hits a golf ball off the tee. The height of the ball is given by y=-16x^2+ 4013x+3250, where y is the height in yards above the ground and x is the horizontal distance in yards from the tee. How far does Emma hit the ball? At how mamy seconds w ill the. ball reach its maximum height?

The graph shown is the graph of which function?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?