Question

nadeen is at an arcade. she started with 18 tokens. each game costs 3 tokens. so far, nadeen has played x games. which expressions can we use to describe how many tokens nadeen has left? choose 2 answers: a $18 - 3x$ b $3(6 - x)$ c $18 - x$ d $3x + 18$ e $3(3 - 3x)$

Explanation:

Step1: Calculate total tokens used

Total tokens used = $3x$

Step2: Find tokens left (first form)

Tokens left = Initial tokens - Used tokens
$18 - 3x$

Step3: Simplify to second equivalent form

Factor out 3 from the expression:
$3(6 - x)$

Step4: Eliminate incorrect options

Option C subtracts only $x$ (not token cost), D adds tokens (wrong operation), E expands to $9-9x$ (not equivalent).

Answer:

A. $18 - 3x$
B. $3(6 - x)$