Which of the following best explains why cosine StartFraction 2 pi Over 3 EndFraction not-equals cosine StartFraction 5 pi Over 3 EndFraction?

A ) The angles do not have the same reference angle.
B) Cosine is negative in the second quadrant and positive in the fourth quadrant.
C) Cosine is positive in the second quadrant and negative in the fourth quadrant.
D) The angles do not have the same reference angle or the same sign.

Pranza plotted point a in the coordinate plane below.

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.

An octagonal prism has jow many lateral faces?