Q
QuestionMathematics

Yuson must complete 30 hours of community service. She does 2 hours each day. Which linear equation represents the hours Yuson has left after x days? A. y = –2x + 30 B. y = 2x + 30 C. y = –2x – 30 D. y = 2x – 30
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Answer

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Step 1:
Identify variables

Let y represent the hours Yuson has left and x represent the number of days completed.

Step 2:
Set up the relationship

y = 30 - 2x
Yuson starts with 30 hours and subtracts 2 hours for each day.

Step 3:
Rewrite equation in standard form

y = -2x + 30
This matches option A.

Final Answer

y = -2x + 30
The correct linear equation is option A.