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In a lab experiment, 480 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 22 hours. How many bacteria would there be after 25 hours, to the nearest whole number?
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In a lab experiment, 480480 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 2222 hours. How many bacteria would there be after 2525 hours, to the nearest whole number?\newlineAnswer:

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Q. In a lab experiment, 480480 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 2222 hours. How many bacteria would there be after 2525 hours, to the nearest whole number?\newlineAnswer:
  1. Calculate Doubling Periods: We need to determine how many times the bacteria population will double in 2525 hours, given that it doubles every 2222 hours. To do this, we divide the total time by the doubling period.\newlineCalculation: 2525 hours // 2222 hours per doubling == approximately 1.136361.13636 doublings.
  2. Determine Growth Factor: Since we can't have a fraction of a doubling, we need to consider that the bacteria will have doubled once in the 2525-hour period, and we will have some growth towards the next doubling. To find the growth factor for the remaining time, we take the fraction of the doubling period that has passed after one full doubling.\newlineCalculation: 2525 hours - 2222 hours == 33 hours. This is the time towards the next doubling.\newlineGrowth factor for 33 hours == 33 hours // 2222 hours == approximately 252522 of a doubling period.
  3. Calculate Bacteria After One Doubling: To find the number of bacteria after one full doubling and additional growth, we first calculate the number of bacteria after one doubling, and then apply the growth factor for the additional 33 hours.\newlineCalculation: After one doubling, the number of bacteria is 480×2=960480 \times 2 = 960.\newlineTo find the growth for the additional 33 hours, we need to raise 22 to the power of the growth factor.\newlineGrowth for 33 hours = 20.136362^{0.13636}.
  4. Calculate Growth for Additional Time: We calculate the growth for the additional 33 hours using the growth factor.\newlineCalculation: 20.136361.094172^{0.13636} \approx 1.09417 (using a calculator).
  5. Calculate Total Bacteria After 2525 Hours: Now we multiply the number of bacteria after one doubling by the growth factor to find the total number of bacteria after 2525 hours.\newlineCalculation: 960×1.094171050.4032960 \times 1.09417 \approx 1050.4032.
  6. Round to Nearest Whole Number: We round the result to the nearest whole number, as the question asks for the number of bacteria to the nearest whole number.\newlineCalculation: 1050.40321050.4032 rounded to the nearest whole number is 10501050.

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