120 grams half life at 45 days would be 60 then half life of 60 in another 45 days (90 total) should be 30 grams
905,154 rounded to the nearest ten thousand is 910,000. This is because the 5 in the thousands place is equal to 5, and when the number is 5 or more, you round up. That’s why when you round that number to the nearest ten thousand, it is 910,000.
The answer is 5 units. the top is 10, and x is half of that
