When I triple my number, add five and add my number I get twenty five what is my number?

5

Step-by-step explanation:

Let x be the number.

Triple the number: 3x

Add 5: 3x + 5

Add the number: 3x + 5 + x = 4x + 5

4x + 5 = 25

4x = 20

x = 5

the answer is b

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