Use a graphing calculator to sketch the graph of the quadratic equation, and then state the domain and range.
y = -5x2 - 4x + 1
a. D: all real numbers
D: (20
R: 51.8)
R. all real numbers
b. D: all real numbers
D: all real numbers
R (218)
R: 50.2)

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.

18.75 gallons

step-by-step explanation:

the answer is 13 cm