HELP PLEASE ITS FOR A TEST The number of minutes needed to solve an exercise set of variation problems varies
directly as the number of problems and inversely as the number of people working on the
solutions. It takes 6 people 42 minutes to solve 20 problems.
What is the constant of variation?
How many minutes will it take 8 people to solve 54 problems?

Acircular hot tub located near the middle of a rectangular patio has a diameter of 48 inches. the patio measures 11 feet by 6 feet. what is the area of the patio that is not covered by the hot tub?

At 6 1/2 cents per pound of string beans how much does 7 pounds cost

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?