When evaluating (8x+9)? -5 for x = 1, the given value of 1 is substituted for what part of the expression? A. the exponent

B. The constant

C. the variable

D. any numerical value

C. The variable

Step-by-step explanation:

The given value states that all values of x will be replaced by 1. The definition of a variable in algebra is a symbol for a number we don't know yet, so x will be the variable in this equation

C. the variable

Step-by-step explanation:

(8x+9) -5 < The original question.

(8(1)+9) -5 < Replacing the variable.

(8 + 9) -5  < Completing the multiplication.

17 - 5  =     < Doing the addition.

12

x = 1 tells us the "x" or the variable in this equation is a substitute for 1.

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step-by-step explanation:

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