During high tide around 11:00 p. m., the water level is 3 feet above a marker on a pier. The following day, during low tide around 5:12 a. m., the water level has dropped 3 feet below the marker. The height of the water is modeled by the function y=3cos(24pi/149x) where x is the time in hours since 11:00 p. m. What is the height of the water at 2:15 a. m.?

A 0.22 feet below the marker

B 0.07 feet below the marker

C 1.26 feet above the marker

D 1.39 feet above the marker

first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!

the answer i believe is 27 units.

step-by-step explanation:

your answer would be b

i believe that the answer is y+6=1/3(x+2)