Question

which is an equivalent expression to
$x + 9 + x - 1$
$circled{a}x + 8$
$circled{b}10x$
$circled{c}2x + 8$
$circled{d}8x$

Explanation:

Step1: Combine like terms

$$x + 9 + x - 1=(x+x)+(9 - 1)$$

Step2: Simplify the expression

$$(x+x)+(9 - 1)=2x+8$$

Answer:

C. \(2x + 8\)