Mathematics: Solve the inequality 7.2 0.9(n+8.6)

Solve the inequality 7.2 0.9(n+8.6) - id7209868267369, s73588

Ответ:

dayanara72

02.12.2020

Mathematics

After how many years is the fish population 100?

x=3.97 years

Step-by-step explanation:

The fish population increases by a factor of 1.5 each year. We have the equation that represents this situation

f (x) = 20 (1.5) ^ x

Where x represents the number of years elapsed f(x) represents the amount of fish.

Given this situation, the following question could be posed

After how many years is the fish population 100?

So we do f (x) = 100 and solve for the variable x

$100 = 20 (1.5) ^ x\\\\\frac{100}{20} = (1.5)^x\\\\ 5= (1.5)^x\\\\log_{1.5}(5) = log_{1.5}(1.5)^x\\\\log_{1.5}(5) = x\\\\x =log_{1.5}(5)\\\\x=3.97\ years$

Observe the solution in the attached graph

Create a question with this scenario you could ask that could be answered only by graphing or using

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Solve the inequality
7.2>0.9(n+8.6)

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Solve the inequality 7.2>0.9(n+8.6)

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Solve the inequality
7.2>0.9(n+8.6)