15 POINT PLZ HURRY If f(n) = n2 - 2n, which of the following options are correct?

Select all that apply.

f(2) = 0
f(-2) = 0
f(1) = 3
f(5) = 35
f(-4) = 24

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

Anne plans to increase the prices of all the items in her store by 5%. to the nearest cent, how much will an artist save if the artist buys a canvas and a frame that each measure 24 by 36 inches before the price increase goes into effect?

What is number 31 as a sum of tens and ones?