Asurvey of randomly-selected students on a campus of 1,000 students asked who preferred coffee to tea. the sample proportion is found to be 59%. which statement is true? 590 students must prefer coffee to tea. less than 590 students must prefer coffee to tea. more than 590 students must prefer coffee to tea. the sample proportion must precisely represent the entire population’s choice. the population proportion is not necessarily equal to the sample proportion.

y = x + 95

y = 42 + 95

y=137 mm hg

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!