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13 December, 10:18

Andre is paid $4 per hour for the first 30 hours he works every week. He makes $5 per hour for each hour he works over 30 hours per week. In other words, total wages = fixed wages for 30 hours + additional wages at $5 per hour. Write a function that gives Andrew's total wages when he works more than 30 hours.

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  1. 13 December, 10:39
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    Since we are not concerned about when hours are less than 31.

    For the first 30 hours he earns 4*30=$120. So as a linear equation 120 is the y-intercept and since he earns $5 per hour after 30 hours the slope, or rate of change is 5 thus:

    y=5 (x-30) + 120 where y is wages in dollars and x is total hours worked

    y=5x-150+120

    y=5x-30
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