A function is defined by the set of ordered pairs {(-2, 3), (-1,4),(0,5)}. Which ordered pair below, if added to this set, would create a set that no longer represents a function?
(1,5)
(3,-2)
(-1,-4)
(-4,-1)

please help! (explain it too)

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.

In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d.what is the height of the tide after 93 hours?