A traffic engineer is modeling the traffic on a highway during the morning commute. The average number of cars on the highway at both 6 a. m. and 10 a. m. is 4000. However the number of cars reaches a peak of 6,500 at 8 a. m.. Write a function of the parabola that models the number of cars on the highway at any time between 6 a. m. and 10 a. m.

What are “like terms”? why can we only add like terms?

What is the interquartile range of this day at set?

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.