Abiology class takes a field trip to a field, and collects data on the biodiversity (the number of different plant and animal species) in their local ecosystem, each student randomly selects one square meter of ground, and counts all the different species of plants, animals, bugs, mold etc that are within that square meter, as well as the total number of organisms. student a finds 27 unique species in her square meter, and decides to use fermi estimation to speed up the rest of her data collection. if she counts 23 grass plants in 100 square centimeters, about how many grasses are there in her entire square meter? [assume the grass is evenly distributed]

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!

step-by-step explanation: