A demand function for step stools manufactured by U-Step is q = –720p + 20,500. What is the revenue if the price per step stool is $18?

$369,000

$135,720

$28,040

$7,540

What are the steps to solving the inequality 3b + 8 ≥ 14?

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

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?