Which description best explains the domain of (g circle f) (x)? A) the elements in the domain of f(x) for which g(f(x)) is defined
B) the elements in the domain of f(x) for which g(f(x)) is not zero
C) the elements in the domain of g(x) for which g(f(x)) is defined
D) the elements in the domain of g(x) for which g(f(x)) is not zero

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  A) the elements in the domain of f(x) for which g(f(x)) is defined

Step-by-step explanation:

(g circle f)(x) means g(f(x)). In order for a value (x) to be in the domain of this function, f(x) must be defined. That is, x must be in the domain of f(x). In addition, g(f(x)) must be defined.

These requirements are expressed in choice A.

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.