Signal shifts from one time frame or setting to another example sentence

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.

Math question.. plz me .. best answer all

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.