Decide Whether the Equation Is an Identity, a Conditional Equation $$- 0.9 ( x + 9 ) + 0.1 ( x + 9 ) = - 0.8 x - 7.2$$

question 82

Multiple Choice

Decide whether the equation is an identity, a conditional equation, or a contradiction. Give the solution set.
- $$- 0.9 ( x + 9 ) + 0.1 ( x + 9 ) = - 0.8 x - 7.2$$

• A) Conditional; \(\{ - 0.8 \}\)
• B) Identity; {all real numbers \(\}\)
• C) Contradiction; \(\varnothing\)
• D) Conditional; \(\{ - 9 \}\)

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