You need to arrange eight of your favorite books along a small shelf. How many different ways can you arrange the books, assuming that the order of the books makes a difference to you?

40, 320 ways

8!= 8*7*6*5*4*3*2*1

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i