Answer:
f(x) has one real zero at –4 because the graph of the function has an intercept at (–4, 0).
Explanation:
Zeros of a function f(x) are those points where f(x) = 0. Then, zeros coordinates have the form (x1, 0), (x2, 0), et cetera. In the graph, a zero is seen as the interception of f(x) with the x-axis.