Marty is at the clothing store and sees that the shirt he wants is 15% off. He knows he can use the expression c - 0.15c, where c is the cost of the shirt, to find the discounted cost of the shirt before tax. Determine if the expression below is equivalent to c - 0.15c..

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Step-by-step explanation:

The equation for the discounted cost :

c - 0.15c

Initial cost = c

Discount percent = 15% = 15/100 = 0.15

Discount on sale = 0.15 * c = 0.15c

Hence,

Discounted price = initial price - discount on sale

Discounted price = c - 0.15c

c - 0.15c = 0.85c

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.

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step-by-step explanation: