Question

try again (b): your answer is incorrect. (a) select all equivalent expressions from the list for the expression. x + x + x □ 2x - x □ 3x □ x + 3 □ 3 + x (b) select all equivalent expressions from the list for the expression. 36y - 8 □ 4(9y - 2) □ 18y - 4 □ 28y □ 4·9y - 4·2

Explanation:

Step1: Simplify (a) expression

$x+x+x = 3x$

Step2: Verify (a) options

$2x-x=x$, $x+3
eq3x$, $3+x
eq3x$, only $3x$ matches.

Step3: Factor (b) expression

$36y-8=4(9y-2)$

Step4: Expand factored form

$4(9y-2)=4\cdot9y - 4\cdot2=36y-8$

Step5: Verify (b) options

$18y-4
eq36y-8$, $28y
eq36y-8$, so $4(9y-2)$ and $4\cdot9y - 4\cdot2$ match.

Answer:

(a) 3x
(b) 4(9y−2), $4\cdot9y - 4\cdot2$