11. Tell whether the sequence is arithmetic. If it is, what is the common difference? 20, 11, 2, -7
A. Yes: 9
B. Yes, -9
C. Yes; 1/9
D. No

Adriver from the university of florida women’s swimming and diving team is competing in the in ncaa zone b championships

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

The graph of a hyperbola is shown. what are the coordinates of a vertex of the hyperbola? (0, −4) (−3, 0) (0, 0) (0, 5)