I need help with both questions plzz

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.

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?