Please be neat will mark brain

1)

2)

3)

4)

Step-by-step explanation:

1) Since the whole angle is , and to find the other angle, which is labeled as , you subtract from :

2) Since you already have two angle measures and , you add them up and subtract it from to get the angle measure for :

3) Same thing from number 1. Subtract from :

4) Same thing from number 2. Add and and subtract it from :

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!

i belive those are the ones that are under 90 degreese.