A campground owner has m of fencing. He wants to enclose a rectangular field bordering a​ river, with no fencing along the river.​ (See the​ sketch.) Let x represent the width of the field. ​(a) Write an expression for the length of the field as a function of x. ​(b) Find the area of the field ​(arealength​width) as a function of x. ​(c) Find the value of x leading to the maximum area. ​(d) Find the maximum area.

1/4 because there is 4 grades.

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.

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.