ANSWER
30 students
EXPLANATION
The cost per student varies inversely as the number of students.
Inverse proportion is written as:

Let the cost per student be y.
Let the number of students be x.
It will cost each student $250 if 24 students attend. This means that:

If the cost is down to $200, it means that y is now $200.
That is:

Therefore, 30 students could attend.
The function is

Initial investment is given when

, so substituting this into

we have


Hence, correct answer is B $10
Answer:
"Eduardo did not use the correct formula for the circumference"
Step-by-step explanation:
The circumference formula is C = 2πr
Area formula is A=πr^2
Volume formula is correct. The steps area also correct to find r, the radius.
But in the end, he put the formula for circumference wrong. He used the formula for Area, NOT Circumference.
Hence, "Eduardo did not use the correct formula for the circumference" should be the correct choice for this question.
Her goal is 60 boxes. this is all the work i did basically i set it up as an equation of looking for x and that’s my work so i hope it helps :)