A set of exam scores is normally distributed and has a mean of 79.1 and a standard deviation of 7.2. You choose a random score from the data set and the probability of getting a score less than or equal to this is 0.2296. help plz

What aspects of lines have to be diffrent

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

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.