The cost of student tickets at a movie theater can be determined by the equation: C = $5.50x, where C is the cost and x is the number of student
tickets. Which statements are true about this situation? Select each correct
statement.

A. The constant of proportionality is $5.50.

B. The unit rate is $2.25.

C. Two movie tickets cost $11.00.

Can someone me with this? i’m not sure what to put for my equations.

Assume that females have pulse rates that are normally distributed with a mean of mu equals 72.0 beats per minute and a standard deviation of sigma equals 12.5 beats per minute. complete parts (a) through (c) below. a. if 1 adult female is randomly selected, find the probability that her pulse rate is between 65 beats per minute and 79 beats per minute. the probability is? b. if 16 adult females are randomly selected, find the probability that they have pulse rates with a mean between 65 beats per minute and 79 beats per minute. the probability is? c. why can the normal distribution be used in part (b), even though the sample size does not exceed 30?

Aculinary club earns $1360 from a dinner service. they sold 45 adult meals and 80 student meals. an adult meal costs twice as much as a student meal. what is the cost of an adult meal?