If on adding 9 to twice of a whole number gives 31, then the whole number is

The whole number is 11.

Step-by-step explanation:

Let's call the whole number x. We can write the following equation:

2x + 9 = 31

Subtracting 9 from both sides of the equation gives us:

2x + 9 - 9 = 31 - 9

2x = 22

Dividing both sides of the equation by 2 gives us:

2x / 2 = 22 / 2

x = 11

your answer is b ^w^ hope i

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.