Demi and Juan start saving money for their vacation. Demi starts with $50 and saves $20 each week; Juan started with only $35, but saves $25 each week. a. Write expressions for Demi and Juan that represents the amount they saved in w weeks.

b. If their vacation is in 4 weeks, who will have more money?

Extension: Write the expression that represents their combined total. Write an expression that represents the difference the amount Juan and Demi have.
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Which number completes the system of linear inequalities represented by the graph? y> 2x – 2 and x + 4y 2 et 2 3 4

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?

What number line represents the solution set for the inequality -1/2 greater than or equal to 4