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The formula p=8n-30 gives the profit p when a number of items n are each sold at $8 and expenses totaling $30 are subtracted

a. If the profit is $170.00, how many items were bought

b. If the same number of items were bought but the expenses changed to $40, would the profit increase or decrease, and by how much

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  1. 8 July, 20:49
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    The profit here has decreased by $10. We can work this out through the following equation -

    170 = 8n-30 = 200 = 8nn=25B: P = 8 (25) - 40 = 200 - 40P = 160
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