The Zika virus originally started with 3 people. The number of people infected doubles every 2 hours. Part 1: Write an equation to model the situation.

Part 2: How many people are infected after 6 hours?

Part 3: How many people are infected after 2 days?

Part 1:

Part 2: There are 24 people infected

Part 3: P(48)=50,331,648

More than 50 million people are infected after 2 days

Step-by-step explanation:

Exponential Growth

The natural growth of some magnitudes can be modeled by the equation:

Where P(t) is the actual amount of the magnitude, Po is its initial amount, r is the growth rate and t is the time.

We know the Zika virus started with Po=3 people infected. The number of people infected doubles every 2 hours, which means that for t=2 hours, P(2)=6, thus:

Dividing by 3:

Solving for 1+r:

1+r=1.4142

Part 1:

The equation to model the situation is:

Part 2:

After t=6 hours:

P(6)=24

There are 24 people infected

Part 3:

After 2 days, t=2*24 = 48 hours:

P(48)=50,331,648

More than 50 million people are infected after 2 days

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step-by-step explanation:

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