2. An item used to sell for seventy-five cents a pound, and you see that it's been marked up to eighty-one cents a pound. What is the percent increase?

It is not 4%.  The answer is 8%

Step-by-step explanation:

First subtract .75 from .81 and you get the difference between the two prices .06 cents.  Now use the formula % = (amount of increase)/(original amount) * 100.

Substitute and you get X = .06/.75 * 100

X = 6/.75         (.06 * 100 = 6)

X = 8

8%

konichiwa~! my name is zalgo and i am here to answer your anime-related question today. more than likely, kirishima would kill izuku, marry mino and kiss momo. all of this would be my opinion by the way. (and i am also a weeb lol)

i hope this you! : d

stay and stay proud! " - zalgo

(and do you think you can mark me as brainliest? i'd greatly appreciate it! arigato~! )