3. The height h (in feet) of an underhand volleyball serve can be modeled by h = -16t+ 30t + 4, where til the time (in seconds).
a. Do both t-intercepts of the graph of the function have meaning in this situation?
Explain.
b. No one receives the serve. After how many seconds does the volleyball hit the
ground?

b

Step-by-step explanation:

I just did the equation

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation: