21. PROFIT FUNCTION FOR LIGHT BULBS The management of TMI finds that the monthly fixed costs attributable to the pro-
duction of their 100-watt light bulbs is $12,100.00, If the
cost of producing each twin-pack of light bulbs is $0.60
and each twin-pack sells for $1.15, find the company's
cost function, revenue function, and profit function.

Icould really use some with this question.

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

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?