Anumber is multiplied by 6, and that product is added to 3. the sum is equal to the product of 3 and 9. find the number.

4

Step-by-step explanation:

Let assume the number to be   = x

The second statements stated that

6 ˣ x  + 3 = 3 ˣ 9

    6x + 3 = 27 , solving the simple linear equation,

         6x  = 27 - 3

         6x  = 24, and by dividing through by 6

            x = 4

Therefore , the number is 4

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.