In a high school, 7% of the students play the piano. this is 21 students. choose the expressions that complete each step involved in setting up and solving the proportion that represents the situation. can someone answer this? i'm pretty

If 7% = 21 students
Then a 100% = 300 students

First method:
To go from 7 to 21 we multiplied 7 by 3
So we have to multiply 100 by 3 also
Wich gives us the final 300 students!

Second method:
7% = 21 students
100% = x students

You can do a cross product
(100 x 21) / 7 = 300

Let me know if it helped!:)

Your answer would be ahere is how: perimeter is how long all the sides are. in a rectangle, there are two sets of parallel sides. so, to find this, we would to the following.(15x2)+(4x2)30+838if you have questions ask! and mark me brainliest! i really wanna level up : 3