Number of Solutions of Functions

Let function $f(x) = 2x + 3$ and function $g(x) = x^2 - 4$.

Determine the values of $x$ for which $f(x)$ is equal to $g(x)$. What can you conclude about the quantities below?

Quantity A: The number of solutions for $f(x) = g(x)$.

Quantity B: 2