course Mth 152
Preliminary Question-Answer (qa) Questions________________________________________
There are 2 questions in this document, accompanied by some instructions.
Copy this document into a word processor or text editor.
Answer the two questions posed in this document, inserting your answers, confidence assessments and self-critiques as explained.
• Solutions are given, but don't look at the solution to a question or problem until you have entered your answer.
• You will probably find that you can answer many of these questions without writing anything down.
• It is often helpful to sketch, doodle, jot down ideas, do calculations, organize and test ideas on paper. On those problems where you cannot arrive at an answer 'in your head', is recommended that you work out your solutions on paper.
When appropriate, you will later be encouraged to use a calculator to do any arithmetic you cannot do mentally. However the calculator is not appropriate to the questions that appear on this document. Put the calculator aside and think through these questions.
When you are finished you will submit your work according to the instructions at the end of this document.
Question: **** `q001. If you are earning money at the rate of 8 dollars / hour and work for 4 hours, how much money do you make during this time? Answer in such a way as to explain your reasoning as fully as possible. A solution to this problem appears several lines below, but enter your own solution before you look at the given solution.
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Your solution: (type in your solution starting in the next line)
$8 x 4 hours = $32
Confidence Assessment: 3
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Given Solution: 8 dollars / hour means '8 dollars per hour', indicating that for every hour you work you earn 8 dollars. If you work for 4 hours, then if you earn 8 dollars for every one of those hours you earn 4 * 8 dollars = 32 dollars.
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Self-critique (if necessary): Ok
Self-critique Rating: Ok
Question: **** `q002. If you work 12 hours and earn $168, then at what rate, in dollars / hour, were you making money?
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Your solution:
$168 divided by the amount of hours worked (12), will give the amount per hour that you were making. 168/12 = $14/hour
Confidence Assessment: 3
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Given Solution: $168 earned in 12 hours implies that $168 / 12 = $14 were made per hour, so the rate is $14 / hour.
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Self-critique (if necessary): Ok
Self-critique Rating: Ok
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