Share $240 between Alex and Burton in the radio:
5:1

$200 : $40

(i divided 240 by 6 because there are six parts in the ratio, and got 40. 40*5=200 and the other 40 makes it 240 in the ratio of 5:1)

Step-by-step explanation:

19 shows direct variation

20 does not (guessing for this one a bit)

19- Shows a steady increase of four in y for each one in x

20- Shows no increase

Step-by-step explanation:

19 is a constant increase by 4, 20 does not show either