Aset of data already has the values 11, 14, 23, and 16. what value would have to be added to the set for the mean of the five numbers to be 18?

8
12
18
26

How do you answer this question? (step by step)

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second

Evaluate this using ! 0.25^2 x 2.4 + 0.25 x 2.4^2 − 0.25 x 2.4 x 0.65