Researchers report that the average teen (age 13-17) sends 1742 ±112 text messages per month.

which of the following is the best interpretation of this information?

a. no teen sent fewer than 1630 texts or more than 1854 texts in a single month.

b. 1742 is an estimate of the average number of texts sent by teens in one month.

c. the margin of error is ± 2 years of age.

d. the margin of error is ± 224 text messages

25.3

step-by-step explanation:

1st step

add 3+6

=9

multipy 9*3

=37

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.

y=-2x0 is most likey your asnwer