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Question

James earn $82 weekly and gets $4.5 extra for every extra hour of baby sitting.The correct equation is .
where,
Total earnings : w
Time(hour) : t

A
w=$82+$4.5t
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B
w=$6.5+$82t
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C
w=$86.5+$4.5t
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Solution

The correct option is A w=$82+$4.5t
Given:
Weekly fixed earnings = $82
Let the extra hours of babysitting be 't' hours
Variable earnings = $4.5×t

So, for 1 extra hour of babysit, one will earn:
=$82+$4.5×1=$82+$4.5=$86.5
In this way, the earnings for different hours can be shown as:
Time (hours) Payment (in ₹)
1 $82+$4.5×1=$86.5
2 $82+$4.5×2=$91
t $82+$4.5×t=w

So, total earnings will be, w=$82+$4.5t

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