Marine life is dependent upon the microscopic plant life that exists in the photic zone, a zone that goes to a depth where about 1% of the surface light remains. In some waters with a great deal of sediment, the photic
zone may go down only 15 or 20 feet. In some murky harbors, the intensity of light d feet below the surface is
given by I = 1o e -0.18d, where lo is the intensity of light at the surface. What percentage of the surface light will
reach a depth of
(A) 10 feet? (B) 20 feet?

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!

idk

step-by-step explanation:

idk

hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!