In 2005, 24.8% of all americans were under 18 years old. rhonda conducts a survey of the ages of students in eleventh grade at her school. on november 1, she finds the average age is 200 months. she also finds that two-thirds of the students are within 6 months of the average age. write and solve an equation to determine the age limits for this group of students. how many months will it be until the first of these students turn 18?

Let's assume

x is the age of 11th grade student

we are given

Rhonda  conducts a survey of the ages of  students in eleventh grade at her school.

On November 1, she finds the average  age is 200 months.

and

She also finds that  two-thirds of the students are within  6 months of the average age.

so, we can set up equation as

now, we can solve for x

So, the minimum age of 11th grade student is 197 months

So, the maximum age of 11th grade student is 203 months

now, we are given age is 18 years

we will change into months

So, first of these students turn 18 is

months...........Answer

answer:

c. the third graph

if x = 1, then the answer is 3.5