HALP PLZ! WILL GIVE BRAINLIEST TO FIRST ANSWER! A health inspector conducts air quality tests on a randomly selected group of 10 classrooms at a high school. Identify the population and sample for this situation. A) The population is all classrooms in the district; the sample is the 10 classrooms selected. B) The population is all classrooms in the high school; the sample is the 10 classrooms selected. C) The population is all students in the district; the sample is the students in the 10 classrooms selected. Eliminate D) The population is all students in the high school; the sample is the students in the 10 classrooms selected.

B

Step-by-step explanation:On  usa test prep

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.