Answer #15 please!! Explain thoroughly ways to quickly get an ordered pair to represent the function. Please!

To find an ordered pair, remember that ordered pairs are displayed in the form (x,y). Then, substitute an arbitrary value for x or y and solve for the remaining variable.
Since x represents the amount of days, use for instance x=1 and solve for y:
[tex]\begin{gathered} x=1 \\ \Rightarrow y+0.18(1)=60 \\ \Rightarrow y+0.18=60 \\ \Rightarrow y=60-0.18 \\ \Rightarrow y=59.82 \end{gathered}[/tex]Therefore, the ordered pair (1,59.82) is a solution to the equation. Since y represents the amount of water in m^3, then, the real-world meaning is that there are 59.82 m^3 of water in the pool in day 1.