O A. x = 9, y = 2, z = 5 O B. x= 72, y = 2, z = 5
O C. x = 9, y = 16, z = 45
O D. x = 81, y = 4, z=40

i used to know how to do this in 7th but i forget easily

step-by-step explanation:

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function

8: 40

2 hours

10: 40

55 min

11: 35