Question

A survey asked a class of 30 students how many siblings they have. The number of students who have one sibling is 3 × the number of students, n, who have two or more siblings. If 6 students have no siblings, which of the following equations represents this situation?

a)30=3n+1+6

b)30=n+3(2n)+6

c)30=n+3(2n)

d)30=n+3(n)+6

Answer 1

The equation that represents the situation described is 30 = n + 3(n) + 6. This equation represents the total number of students in the class (30) being equal to the sum of the students with one sibling (n), three times the number of students with two or more siblings (3n), and the six students with no siblings.

Step-by-step explanation:

The equation that represents the situation described is 30 = n + 3(n) + 6. This equation represents the total number of students in the class (30) being equal to the sum of the students with one sibling (n), three times the number of students with two or more siblings (3n), and the six students with no siblings. By simplifying the equation, we can verify that it accurately represents the given information.