Which algebraic expression is equivalent to the expression below? 9(8x + 10) + 9(9 - x) a. 63x - 171 b. 81x + 171 c. 63x + 9 d. 63x + 171

9*8x = 72
9* 10 = 90

so far, 72x + 90 + 9(9-x)

9 * 9 = 81
9 * -x = -9x

now, we have: 72x + 90 + 81 -9x

Now we can simplify by combining like terms

72x - 9x = 63x
90 + 81 = 171

63x + 171 is our answer
The answer is B.

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~ Zoe

Did u want to find the value of x?