David’s mom is four times David’s age plus 12. If y represents David’s age, which expression represents the age of David’s mom? A. 12y – 4 B. 12y + 4 C. 4y – 12 D. 4y + 12

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

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step-by-step explanatio89