Answer: 
Concept:
In a function f(x), it represents a function in terms of x or for x. Therefore, to find the values in the function, substitute values within the parenthesis to solve.
Solve:
<u>Given information</u>

<u>Need to find</u>

<u>Substitute (x + 4) to the position of x</u>

<u>Distributive property on the numerator</u>

<u>Combine like terms</u>


Hope this helps!! :)
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To add, subtract, multiply or divide the number given to get a whole number or an integer
Answer:
43 degrees
Step-by-step explanation:
Angle B is 43 degrees, and is congruent to the vertically opposite angle by reason of vertical angles.
The answer is -5. Just plug in -5 to check and x will equal 3.