we know that
Any function f(x) is continuous at x=a only if

We can see that this curve is smooth everywhere except at x=3
so, we will check continuity at x=3
Left limit is:

Right limit is:

Functional value:

we can see that left limit is not equal to right limit
so, limit does not not exist
so, this function is discontinuous at x=3
Since, limit does not exist
so, there will be non-removal discontinuity at x=3
so, option-C........Answer
Do number 11 in your own way.
The zero of a function is the x-value at which the function value is zero. That is, the value of the function that intersects the x-axis. From the picture, the zero is -5
Answer: C. 5
Step-by-step explanation:See the attached picture.