Question which-

2.4 Equivalent Expressions - Simplifying polynomials
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Which expression is equivalent to 9x+6x+2y+3y?

A.

3 x + 5 y

B.

6 x + 8 y

C.

12 x + 8 y

D.

15 x + 5 y

Which expression is equivalent to 9 x + 6 x + 2 y + 3 y

Easy-difficulty · SAT Math · Equivalent Expressions — Simplifying polynomials. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.

Answer explanation

Choice D is correct. Combining like terms in the given expression yields 9x+6x+2y+3y, or 15x+5y.

Choice A is incorrect and may result from conceptual or calculation errors.

Choice B is incorrect and may result from conceptual or calculation errors.

Choice C is incorrect and may result from conceptual or calculation errors.