Bacteria left in 1st hour=100*0.9¹=90
2st hour=100*0.9*0.9=100*0.9²
....
after 5 hours=100*0.9^5
Have u tryed 1 insted of -1 or it might be o solution
Step-by-step explanation:
I hope I got it right.....
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below =)
15 has 1,3,5,15
18 has 1,2,3,6,9,18
12 has 1,2,3,4,6,12