What is the constant that should be added to the binomial x^2+12x?

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.

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

Corresponding angles are a. always b. sometimes c. never congruent