Question

A store sold 50 copies of a magazine for $150. Each copy of the magazine costs the same. Which equation and set of ordered pairs best represents the price, in dollars, of a certain number of copies of the magazine? y = 3x; (1, 3), (2, 6), (3, 9) y = 4x; (1, 4), (2, 8), (3, 12) y = 5x; (1, 5), (2, 10), (3, 15) y = 6x; (1, 6), (2, 12), (3, 18)

Answer 1

the answer to this question is y=3x

i will show u how:
150 divide by 50 is 3 so each copy cost 3 dollars

Answer 2

The correct option is A.

Explanation:

It is given that a store sold 50 copies of a magazine for $150 and each copy of the magazine costs the same.

Let the cost of each magazine be p. So, the cost of 50 copies of a magazine is 50p.

`50p=150`

Divide both sides by 50.

`p=3`

The cost of each magazine is 3.

Let x be the number of magazines and y be the price, in dollars. So, the required equation is

`y=3x`

At x=1,

`y=3(1)=3`

At x=2,

`y=3(2)=6`

At x=3,

`y=3(3)=9`

The set of ordered pairs is (1, 3), (2, 6), (3, 9).

Therefore the correct option is A.