Arocket is launched from the top of a 55-foot cliff with an initial velocity of 138 ft/s.
a. substitute the values into the vertical motion formula h = –16t2 + vt + c. let h = 0.
b. use the quadratic formula to find out how long the rocket will take to hit the ground after it is launched. round to the nearest tenth of a second.

answer choices:
a. 0 = –16t2 + 55t + 138; 0.4 s
b. 0 = –16t2 + 55t + 138; 9 s
c. 0 = –16t2 + 138t + 55; 0.4 s
d. 0 = –16t2 + 138t + 55; 9 s

State whether weight is a function of height for the six students and explain. a. yes, height is a function of weight because two students weigh 165 pounds but have different heights. b. no, height is not a function of weight because two students weigh 165 pounds but have different heights. c. yes, weight is a function of height because for each value of height there is one corresponding value of weight. d. no, weight is not a function of height because there is not enough data to determine a function.

What point is the projection of q on a) r b) s c) t

Rewrite so the subject can be y in the formula d=m-y/y+n