The theoretical probability that a pop song plays on your mp3 player is 0.45. there are 80 songs on your mp3 player. how many of the songs are pop songs?

songs on your mp3 player are pop songs.

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 expected value of the random variable : 0, 1 and 2

step-by-step explanation: