The points with coordinates (-1,400) and (2,25/4) lie on the exponential function represented by the equation f(x) = ab^x. Which of the following statement(s) is true about f(x)?

I. The y-intercept of f (x) lies at 100
II. f(x) is a decreasing exponential function
III. The function decreases by a rate of 25%
(1) II, only
(3) I, II, and III
(2) I and II, only
(4) II and III, only

Graph the linear function using the slooe and y intercept

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?

Betty correctly answers 30 questions on your math test there are 40 questions on the test what percent of the questions did she answered incorrectly