A company that produces cell phones has a cost function of C = 232 ~ 771'. + 23312, where C is the cost in dollars and a: is the number of cell phones produced (in thousands). How many units of cell phone (in thousands) minimizes the cost function? a: = thousand phones produced will minimize 0 Question Help: [I] Video 0 Question 10 E1 0/10 pts '0 100 3 99 (3 Details A ball is thrown into the air and its position is given by h(t) = 3.3t2 + 54t + 18 where h is the height of the ball in meters t seconds after it has been thrown. Find the maximum height reached by the ball and the time at which that happens. meters