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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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Kalahira
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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