David sold mugs at a crafts show. On the first day, he sold 7 mugs but lost $ 5.50 on each mug. On the second day, he raised his price and sold 8 mugs with a profit of $ 4.70 on each mug. What was his total profit or loss? Write a profit as a positive number and a loss as a negative number.

If the measure of xyz is 81 what is the measure of yz

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Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?