What are the zeros of this function? (pictured above) How do you know?

x=-1 and x=3

Step-by-step explanation:

The zeroes of a function are its x-intercepts when the function passes through the x-axis. In this case, the parabola passes through (0,-1) and (0,3) which means the x-intercepts are x=-1 and x=3, which are also the zeroes.