1. The height of the tide in a small beach town is measured along a seawall. Water levels oscillate
between 7 feet at low tide and 15 feet at high tide. On a particular day, low tide occurred at 7:30 AM and
high tide occurred at 1:00 PM.
Write a cosine function of the form f(t) = A cos(Bt) + C, where A, B, and C are real numbers, that
models the water level, o), in feet above or below the average sea level, as a function of the time
measured in 7 hours since 7:30 AM

Create a graph for the demand for starfish using the following data table: quantity/price of starfish quantity (x axis) of starfish in dozens price (y axis) of starfish per dozen 0 8 2 6 3 5 5 2 7 1 9 0 is the relationship between the price of starfish and the quantity demanded inverse or direct? why? how many dozens of starfish are demanded at a price of five? calculate the slope of the line between the prices of 6 (quantity of 2) and 1 (quantity of 7) per dozen. describe the line when there is a direct relationship between price and quantity.

I'm marking the brainliest and it's 15 points

Three students each examine the system of linear equations shown. 8x + 4y = 16 8x + 2y = 8 caleb says there is exactly one solution. jeremy says there is no solution. kim says there are infinitely many solutions. which student is correct? provide mathematical reasoning to support your answer. answer in complete sentences. : d