Let's do 51 and 52.
51. The contrapositive has the same truth value as the original statement. That's opposed to the converse, which may or may not be true independent of the original statement.
The contrapositive of IF P THEN Q is IF not Q THEN not P. They're equivalent. Here that's If the cat is not female then it is not tricolor.
Answer: C
52.


For the statement to be true, the exponent must be zero:



Both positive 2 and negative 2 have a square of 4.
Answer: K
By the way, usually we assume
so the restriction that
isn't really necessary. Think of the definition of a polynomial or the binomial expansion:


For these common equalities to work when
we need to define 
Answer:
Yes.
Step-by-step explanation:
It is a function because it passes the vertical line test. Each x-value has just one y-value. If the relation had any x-values that had several y-values, it would just be a relation. But this one is a function.
Hope this helps!
Put the top point on the first point from the top and the other one on the first point from the bottom.