In order to keep a specific bacteria alive, the tempature in a science lab, cannot exceed -20F. The electricity went out, when the tempature was -72F, but is increasing at a rate of 6.5 per hour. How many hours do the scientist have until the bacteria is not safe?

At most 8 hours

Step-by-step explanation:

Given

Required

Determine the time taken

Represent time by t.

The relationship between all parameters is:

This is so (≤) because, according to the question, the temperature can not exceed the maximum.

So, we have:

Collect Like Terms

Solve for t

Hence, they have at most 8 hours

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example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.