A bone fragment was found from an elk which had died 40 years before. What percent of Pb-210 remains? The half-life if Pb-210 is 22 years.

i need more info. are you looked to see there mph? how much they deliver? how far they go?

step-by-step explanation:

i think that you should ask google for the answer to that problem because if we don't know it google does

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6