Lincoln junior high school asked all of their eighth grade students the question, "what is your favorite
breakfast? " and 18% answered "pancakes."
based on this data, which of the following conclusions are valid?
choose 1
18% of all students at lincoln junior high school have breakfast as their favorite meal.
18% of all students in the eighth grade at lincoln junior high school have breakfast as their
favorite meal.
18% of all students in the eighth grade at lincoln junior high school have pancakes as their
favorite breakfast, but we cannot conclude anything about the percent of the population who have
breakfast as their favorite meal.

18% of all students in the eighth grade at Lincoln Junior High School have pancakes as their

favorite breakfast, but we cannot conclude anything about the percent of the population who have

breakfast as their favorite meal.

Step-by-step explanation: A is incoorect 18% of all students at Lincoln Junior High School have breakfast as their favorite meal. As they only surveyed 8th grade students on their favorite breakfast we cannot say anthing for the rest of the school.

As for the second answer choice it asks what they like for breakfast not the favorite meal.

Hope this helps.

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)

delaney would like to make a 5lb nut mixture that is 60% peanuts and 40% almonds.

she has several pounds of peanuts and several pounds of a mixture that is 20% peanuts and 80% almonds.

let 'p' represent the number of pounds of peanuts needed to make the new mixture, and  

let 'm' represent the number of pounds of the 80% almond-20% peanut mixture.

:

p + m = 5

therefore

m = (5-p)

write an equation based on the percent of peanuts

1p + .2m = .6(5)

replace m with (5-p)

p + .2(5-p) = .6(5)

p + 1 - .2p = 3

p - .2p = 3 - 1

.8p = 2

p = 2/.8

p = 2.5 lbs of peanuts required

then

5 - 2.5 = 2.5 lbs of the peanut/almond mixture required

:

a) what is the system that models this situation?

p + m = 5

1p + .2m = .6(5)