Marissa givers her friends a clue to a number she was thinking of. She told them that when her number is tripled and added to 9, the result is 48. What is the number she is thinking of? A.39
B.13
C.11
D.3

answer: you need to organize this better it does not make sense.

step-by-step explanation: ?

answer is  

a.

p = 78

step-by-step explanation:

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