Answer:
23.76
Step-by-step explanation:
2:3:1....added = 6
2/6(72) = 144/6 = 24
3/6(72) = 216/6 = 36
1/6(72) = 72/6 = 12
ratio is now 24:36:12
But, the y intercept is 2.
199.
the z score for the 90th percentile is 1.28, so you can solve the equation

which gets you the 199