Writing an Equation
The depth of the water at the end of a pier changes periodically along with the movement of tides. On a
particular day, low tides occur at 12:00 am and 12:30 pm, with a depth of 2.5 m, while high tides occur at
6:15 am and 6:45 pm, with a depth of 5.5 m. Let t = 0 be 12:00 am.
Write a cosine model, d = acos(bt) + k, for the depth as a function of time.
meters.
This amplitude is
a =
DONE

What is the ratio of the length of an object in yards to the length of the same object in miles?

Why is x= 4 a solution to the proportion 14/x 56/1 6

Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.