Light intensity is measured in foot-candles or lux and represents the amount of light evident from a source. on an average sunlit day, the intensity measure is 32,000 to 100,000 lux. a bright office is lit at about 400 lux. the intensity measure of an electronic device is given by the function:
i = 36log [a/a0]
where a is the measured amplitude of the light intensity and a0 is the measured intensity of moonlight. although i varies with the brightness of different images displayed, if the intensity measure of a computer display is 60, how many times brighter is the computer display than moonlight? carry out your calculations four decimal places and round your answer to two decimal places.

Which of the following represents the range of the graph of f(x) below

Pranza plotted point a in the coordinate plane below.

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?