Answer: 2
Step-by-step explanation:
The y-intercept is when x = 0
[tex]f(x) = \dfrac{20}{1+9e^{3x}}[/tex]
[tex]f(0) = \dfrac{20}{1+9e^{3(0)}}[/tex]
[tex] = \dfrac{20}{1+9e^{0}}[/tex]
[tex] = \dfrac{20}{1+9(1)}[/tex]
[tex] = \dfrac{20}{1+9}[/tex]
[tex] = \dfrac{20}{10}[/tex]
[tex] = 2[/tex]
