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#11974

applications

measurement

medium

30 sec

A scientist is tracking the growth of a certain type of bacteria. According to a model, the number of bacteria in a colony, in thousands, can be estimated by adding $1.2$ to $3.5$ times the number of hours since the experiment began.

According to the model, what is the estimated number of bacteria, in thousands, after $4$ hours?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.