Please help due soon.

9.) 1

10.) x^3

11.) 1/4

12.) 1/p

Remember any index times 1 is 1.
Any base with index 0 is also 1.

Hope it helps, here’s a picture with includes steps.

                         High Low Q1   Q3   IQR    Median    Mean      σ 
College             20     6     8     18    10          14         13.3        5.2 
High School     20     3     5.5 16     10.5      11          11           5.4 

B. Both spreads are best described with the standard deviation.