Asurvey of the students in lance’s school found that 58% of the respondents want the school year lengthened, while 42% think it should remain the same. the margin of error of the survey is ±10%.
according to the survey data, at least
% of students want the duration of the school year to remain unchanged, and at least
% want the school year to be lengthened.

According to the survey data:

at least  32% of students want the duration of the school year to remain unchanged, and

at least  48% want the school year to be lengthened.

Margin of error--

The margin of error is the small amount that leads to the miscalculation of some value.

We are given that:

The margin of error of the survey is ±10%.

  Hence, due to the margin of error the percent of students who want school year to be lengthened lie between:

              (58-10)% to  (58+10)%

               i.e. 48% to 68%.

Similarly,

Hence, due to the margin of error the percent of students who want school year to remain same lie between:

              (42-10)% to  (42+10)%

               i.e. 32% to 52%.

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.