Astore 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?

a: y = 3x; (1, 3), (2, 6), (3, 9)
b: y = 4x; (1, 4), (2, 8), (3, 12)
c: y = 5x; (1, 5), (2, 10), (3, 15)
d: y = 6x; (1, 6), (2, 12), (3, 18)

150/50 = 3

each magazine cost $3

 so A is the correct answer

i think it is x = 1.2

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.