QQuestionMathematics
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.
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