Piecewise Functions Practice Test

Which interval contains $x = -1$ for the piecewise function $f(x) = \begin{cases} 3x + 7 & \text{if } x \leq -1 \\ x^2 - 2 & \text{if } x > -1 \end{cases}$?

What is $f(0)$ for the piecewise function $f(x) = \begin{cases} 2x + 4 & \text{if } x < 1 \\ x^2 - 6 & \text{if } x \geq 1 \end{cases}$?