Pls for the love of god someone explain how to do this to me

In the proof of the triangle angle sum theorem, you must draw an auxiliary line. which construction must you use to draw this line?

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.

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list