a. The average value of
on the given interval is

b. Solve for
:

The answer to this, your question is h = -16t • 2 + 48t + 6
h = -32t + 48t + 6
h = 16t + 6 HOPE I HELPED IN A WAY! ~Marcey<3
Length of the median would be: a+b / 2 = 19+38 / 2 = 57/2 = 28.5
You can set up this equation as:

Because remember, 70% is equal to 0.7 and x represents the unknown value. So, let's just solve it:

So,
70% of 120 is 84.