Initial Conditions and Separation of Variables Practice Test

A function satisfies $\frac{dy}{dx}=\frac{y}{x}$ for $x>0$ with $y(2)=7$. Which $y(x)$ is correct?

A cooling object satisfies $\frac{dT}{dt}=-\frac{1}{10}(T-20)$ with $T(0)=80$. Find $T(t)$.