Which of the following sets of ordered pairs represent a function? Check all that are true.

{(-3, 7), (-2, 7), (-1, 7), (0, 7), (1, 7)}

{(1.5, 3), (2.5, 3), (5, -3), (6, 2.5), (9, 11)}

{(-27, 15), (14, 2), (37, 0), (14, 15), (-3, 7)}

{(15, -2), (-2, 15), (11, 7), (-4, -4), (10.2, 3)}

{(1, 2), (3, 4), (5, 6), (6, 10), (7, 40)}

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

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.

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.