The square of a prime number is not prime.
a) let x ∈ R, If x ∈ {prime numbers}, then 
∉{prime numbers}
there says that if x is a real and x is in the set of the prime numbers, then the square of x isn't in the set of prime numbers.
b) Prove or disprove the statement.
ok, if x is a prime number, then x only can be divided by himself. Now is easy to see that = x*x can be divided by himself and x, then x*x is not a prime number, because can be divided by another number different than himself
C.if the user can only enter functions of the form f(x+k), what are all the values of k that would result in the arrow clearing the castle wall
Answer:
angle 1=149°
angle 2=31°( because they are alternating angles)
Stretch should be correct.
It can't be reflection or rotation because that would result in a congruent figure (same side lengths). A dilation would result in a similar figure, where each of the sides is multiplied by a constant value, which is not the case here since one side remains the same and the other changes.
