Mary is a scientist studying bacteria in a lab. She observes how bacteria changes over time. Use the following table to answer the three questions below.
Time
Number of Bacteria
10:00am
1,000
10:30am

2,500
11:00am
6,250
11:30am
15,625
1) Does this situation model an exponential or linear function? Explain.
2) Does this situation model growth or decay?
3) What is the common difference or ratio?

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