Answer:
[tex]18.5\operatorname{cm}[/tex]Explanation:
Given that today the plant is 5 cm high.
[tex]h_0=5\operatorname{cm}[/tex]the plant grows 1.5 per day;
[tex]\text{rate = 1.5 cm/day}[/tex]Let x represent the number of days;
The height of lynn's plant after x days is;
[tex]h_x=1.5x+5[/tex]after 9 days;
[tex]x=9[/tex]substituting;
[tex]\begin{gathered} h=1.5(9)+5 \\ h=18.5\operatorname{cm} \end{gathered}[/tex]Therefore, lynn's plant is 18.5 cm tall after 9 days,