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Over 6 months, it grows:
\[ 18 \, \text{cm/month} \times 6 \, \text{months} = 108 \, \text{cm} \]
A science journalist writes 5 articles per week, each averaging 1,200 words. If she takes a 2-week vacation, how many words does she write in a typical 12-week publishing cycle, excluding her vacation weeks?
She works for \( 12 - 2 = 10 \) weeks.
Weekly output: \( 5 \times 1,200 = 6,000 \) words.
Total output:
\[ 6,000 \, \text{words/week} \times 10 \, \text{weeks} = 60,000 \, \text{words} \]
#### 60,000
A biologist observes a population of 800 bacteria that doubles every 3 hours. How many bacteria are present after 15 hours?
Number of doubling periods: