Confused, i forgot how to do this

Step-by-step explanation:

a)  

4x - 3 = 2x + 7

4x - 2x = 7 + 3

2x = 10

x = 10 / 2

x = 5

b)

2x + 6 = 7x - 14

6 + 14 = 7x - 2x

20 = 5x

x = 20 / 5

x = 4

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step-by-step explanation:

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.