Leap 1 ten! Circle the answer 20 21 22 23 24 25 26 27 28 29
30
40 39 38 37 36 35 34 33 32 31
41
42 43 44 45 46 47 48 49 50 51

31

Step-by-step explanation:

21+10=31

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!

it would take 7/10 of an hour too fill the pool.

step-by-step explanation: