12 cm A shaded semicircle is inside a circle as shown.
The radius of the circle is 12 cm.
The diameter of the semicircle is 8 cm.
How many times bigger is the unshaded area than
the shaded area?
Your final line must say, times bigger.

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.