19.Item 19 refers to toothpaste which is sold in four different tubes. Which amount is the best buy? 3 100 ml $1.49 150 ml S2.25 **84444 200 ml $2.50 250 ml ILARAK $3.49 O A) 100 ml (B) 150 ml O (C) 200 ml O ( (D) 250 ml​

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Which of the following lines does not intersect the line y=-2x+3 ? a) y=2x b) y=2x-3 c) y=2x+3 d) y=-2x-3

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?