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The correct answer is option B which is {x | x ≤ 4.5}
<h3>What is a number line?</h3>
A number line is a representation of a graduated straight line used to represent real numbers in introductory mathematics.
Because the arrow is pointing to the left, the answer to the solution set needs to be less than the number the dot is on.
A solid dot on a number means that that number is included in the solution set.
In the picture the solid dot is on 4.5, so the solution set needs to be equal to or less than 4.5.
Therefore the correct answer is option B which is {x | x ≤ 4.5}
To know more about number lines follow
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Well.. so many folks caught a cold
so many off that total, recovered,
keep in mind that, the folks who recovered
are just a fraction of the ones who were
sick
so... simply subtract the "recovered" polynomial,
from the "caugh cold" polynomial, namely
![\begin{cases} 8t-5t^2+t^3\impliedby &\textit{caught a cold}\\ \textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\\ \cfrac{5-t^2+1}{5t^3}\impliedby &recovered \end{cases} \\ \quad \\\ [8t-5t^2+t^3]-\left[ \cfrac{5-t^2+1}{5t^3} \right]\implies \textit{still sick}](https://tex.z-dn.net/?f=%5Cbegin%7Bcases%7D%0A8t-5t%5E2%2Bt%5E3%5Cimpliedby%20%26%5Ctextit%7Bcaught%20a%20cold%7D%5C%5C%0A%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5C%5C%0A%0A%5Ccfrac%7B5-t%5E2%2B1%7D%7B5t%5E3%7D%5Cimpliedby%20%26recovered%0A%5Cend%7Bcases%7D%0A%5C%5C%20%5Cquad%20%5C%5C%5C%0A%5B8t-5t%5E2%2Bt%5E3%5D-%5Cleft%5B%20%5Ccfrac%7B5-t%5E2%2B1%7D%7B5t%5E3%7D%20%5Cright%5D%5Cimplies%20%5Ctextit%7Bstill%20sick%7D)
so many off that total, recovered,
keep in mind that, the folks who recovered
are just a fraction of the ones who were
sick
so... simply subtract the "recovered" polynomial,
from the "caugh cold" polynomial, namely