Answer:
3
negative infinity
negative infinity
Explanation:
Real zeros are x values where the graph f(x) crosses the x-axis. Basically what values will you put in to get 0. There are 3 such values where the graph crosses the x axis.
You can see at we move right along the x -axis (x values towards infinity) the graph goes down and keeps going down, so we can say that it is going towards negative infinity in y direction because down is negative and up is positive. Same with the other side, as x values move towards left, graph moves down.