Kala has been offered two 40 hour a week jobs. one job pays an hourly wage of $25 and 10% of all sales. the other job pays $20 an hour and 20% of all sales. for how much in weekly sales will the jobs pay the same amount?

(40 * 25) + 0.10x = (40 * 20) + 0.20x
1000 + 0.10x = 800 + 0.20x
1000 - 800 = 0.20x - 0.10x
200 = 0.10x
200/0.10 = x
2000 = x <=== weekly sales must be $ 2000

If you multiply 0.8x10 you would get 8 but its asking you what is 0.8 to the tenth power and all your doing is multiplying 0.8 ten times and your answer should be .1073741824 so it would also be .1073741824 billion I'm not sure if its billion but I believe that it is