Which algebraic expression is equivalent to the expression below? 6(5x - 9) + 10x

A. 20x - 54
B. 40x-54
C. 20x + 54
D40X-9

Answer

D

Step-by-step explanation:

B

40x-54

Step-by-step explanation:

6*5x=30x

6*9=54

30x-54+10x

30x+10x-54

40x-54

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.

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation: