Question 9 unsaved for all x, (2x+3)^2=? question 9 options: 4x^2+9 4x^2+6x+9 4x^2+6 4x^2+12x+9

It's 4x^2+12x+9 because (2x+3)^2 Is just another way of writing

(2x+3)(2x+3) and all you do is distribute which gives you 4x^2+6x+6x+9 which can be simplified into 4x^2+12x+9.

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.

the answer would be c:   ax + b = ax + c

step-by-step explanation: