Can you please help me answer A and B

a. no because if x is a negative number squared it will be positive.

if x = -3 and y = 2

then x ≤ y is true

but when you square -3 and 2 you will get 9 and 4

so x ≤ y is a false statement.

b. yes the argument is valid and yes my answer is dependent on my answer in question (a)

hope that explains it, good luck!

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.