<span>A. periodic; about 6</span>
(12x+6x-30x-10)/(x-3)=
=(-12x-10)/(x-3)
=-12x*+36- 10x+30=
=-22x+56
The upper quartile is, Q1, is 45. The lower quartile, Q2, is 85. The interquartile range is 40. I hope this helps!
Answer:

Step-by-step explanation:
srry if its wrong but I think it's right :)
btw for the first one
p=19.53
First of all you have to make them equal to each other. What I mean is the following
3x+20=2x+40
Then you should just solve for x