3+6b+3b^2 factoring by special cases

Step-by-step explanation:

Factor 3+6b+3b2

3b2+6b+3

=3(b+1)(b+1)

3(b+1)(b+1)

3(x + 1)^2

Step-by-step explanation:

(3b^2 + 6b + 3)/3

3(b^2 + 2b + 1)

3(x +1)(x+1)

3(x+1)^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.