题目
My LMS Subjects Quiz 6
单项选择题
Ted the plumber charges a fee of $120 plus $250 per hour. Let \;\;\;\;\;\;\; \displaystyle y represent the total amount Ted charges for a job, and let \;\;\;\;\;\;\; \displaystyle x represent the number of hours Ted spends on that job. Which equation below represents Ted's pricing scheme?
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标准答案
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思路分析
The problem describes Ted's pricing as a fixed initial fee of $120 plus a variable amount of $250 for each hour of work. This structure is a linear equation where the total cost y equals the hourly rate times the number of hours ......Login to view full explanation登录即可查看完整答案
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