Nine students in Maddie's classroom are wearing red. There are 30 students in her class. Maddie says that 30% of her class is
wearing red. Is Maddie correct? Explain your reasoning.

Yes

Step-by-step explanation:

30 students

9 of them wearing red                  

Maddie says 30% of her class is wearing red.

you know this because 30 total students take away 9 and you have 21.

now what you do is take that and you are left with 21 and then you add  the nine back so you get 30%!!! DONE BOOM

is there any photos or whatever?

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour