The linear function y=−0.3x+48 models the percentage of men in a certain city, y, smoking cigarettes x years after 1990. Find the slope for the model. Then describe what this means in terms of the rate of change of male smokers in this city over time. m=?
The percentage of men in this city who smoke has
decreased
(Enter: increased or decreased or not changed ) at a rate of
?
% per year after 1990.

step-by-step explanation:

answer: 59

step-by-step explanation:

a

step-by-step explanation:

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.