The sum of a number times 7 and 24 is at most -18. Use the variable x for the unknown number.

unknown number=-6

Step-by-step explanation:

Let x be the unknown number.

7x+24=-18

      7x=-18-24

          =-42

        x=-42÷7

          =-6

Hence, unknown number=-6.

Step-by-step explanation:

10n + 27 >= -18

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.