Number of doubling periods: 15 ÷ 3 = <<15/3=5>>5.
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- Physics experiments: 960 à (5/8) = (960 ÷ 8) à 5 = 120 à 5 = <<120*5=600>>600.
- With controlled variables: 600 à (3/5) = (600 ÷ 5) à 3 = 120 à 3 = <<120*3=360>>360.
- A microbiologist measures enzyme activity in a culture doubling every 3 hours. Starting with 800 units at t=0, and knowing activity is directly proportional to enzyme units, what is the total activity after 15 hours?
- Final enzyme units: 800 Ã 2âµ = 800 Ã 32 = <<800*32=25600>>25,600.
- Since activity = units of enzyme, activity after 15 hours is 25,600.
- An angel investor funds three startups with a total of $2 million. The botanical drug firm gets 40%, the gene therapy company 35%, and the synthetic biology lab the rest. The synthetic lab allocates 15% of its funding to safety testing. How much is spent on safety testing?
