A ball is kicked upward. The height, h (in feet), of the ball is modeled by h = -16t+ 40t, where t is measured in seconds.
How long does it take the ball to reach its highest point?
O A. 25 seconds
OB. 1.25 seconds
O c. 2.5 seconds
OD. 1.4 seconds

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?

E. which of the following is not a possible probability? a. 25/100 b. 1.25 c. 1 d. 0