Simplify this expression: 13 + (–12) – (–5) = ? a. 6 b. –30 c. –6 d. 30

=6

A. 6.

*The answer must have a positive sign.*

Step-by-step explanation:

This question's it's about the order of operations. It stands for parenthesis, exponents, multiply, divide, add, and subtract. It must go left too right.

First, do parenthesis.

Then, you subtract left to right

Finally, add left to right.

It change negative to positive sign.

Hope this helps!

-Charlie

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Thanks!

:)

b. f(x) = –√x + 3this is the correct answer