2.16 The financial aid advisor of a university plans to use a stratified random sample to estimate the average
amount of money that students spend on textbooks each
term. For each of the following proposed stratification
schemes, discuss whether it would be worthwhile to
stratify the university students in this manner.
a. Strata corresponding to class standing (freshman,
sophomore, junior, senior, graduate student)
b. Strata corresponding to field of study, using the fol-
lowing categories: engineering, architecture, busi-
ness, other
c. Strata corresponding to the first letter of the last
name: A-E, F-K, etc.

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression

In new york city at the spring equinox there are 12 hours 8 minutes of daylight. the longest and shortest days of the year very by two hours and 53 minutes from the equinox in this year the equinox falls on march 21 in this task you use trigonometric function to model the hours of daylight hours on certain days of the year in new york city a.what is the independent and dependent variables? b.find the amplitude and the period of the function. c.create a trigonometric function that describes the hours of sunlight for each day of the year. d. graph the function you build in part c. e. use the function you build in part c to find out how many fewer daylight hours february 10 will have than march 21. you may look at the calendar.

Which of the following will form the composite function?