Answer:
B) -1 and D) 1
Step-by-step explanation:
We want to find the solution to

Which means that we want to find the values of x at which the two functions f(x) and g(x) are equal.
In order to do that, we have to look at the table, and see at which values of x the two functions have the same value.
We observe that the only two values at which this occurs are:
at
, where both functions are equal to 
at
, where both functions are equal to 