## University Calculus: Early Transcendentals (3rd Edition)

$$y=e^{5-t}$$
To solve natural logarithm equations, keep in mind this property: - If $\ln x = \ln a$ then $x=a$ $$\ln y=-t+5$$ - Recall the property: $\ln e^x=x$ That means $-t+5=\ln e^{(-t+5)}=\ln e^{5-t}$ Therefore, $$\ln y = \ln e^{5-t}$$ $$y=e^{5-t}$$