Janet has three times as many dimes as nickels and twice as many quarters as nickels. if she has $3.40 in all, how many nickels, dimes, and quarters does she have? if n represents the number of nickels janet has, which of the following equations could be used to solve the problem?
a) 5n + 10n + 25n = 340
b) n + 3n + 2n = 340
c) 5n + 30n + 50n = 340

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?