(-5+25k-8k-20)-5+25k-8k-20
(17k-25)-17k-25
A: 50 cookies an hour (seth) 80 cookies an hour (erika)
b: 50:1 80:1
c: Seth, he bakes more in an hour
Six billon five hundred eighty two million three hundred thousand and ninety four hundred seventeen
1 $ = 100 cents
1.5 $ = 150 cents
1.50 $ a percentage of 200 cents = (150/200)100= 75%
