a store marks up the merchandise it sells by 40%. If the regular price of the item WAS $25 how much is the store selling it for. step by step.

So if the regular price of an item is 25 and the store is marking it up by 40%, then we have to multiply 25 by .4 to find out what 40% of 25 dollars is. 40% of 25 is 10 dollars. So now you just do 25 + 10 and you get 35. $35

Number nine is f(x)= 40x : ) hoped i ya