Pre-Lab Study Questions 1. What property of oil makes it float on water? 2. Why would heating the gas in an air balloon make the balloon rise? 3. What is the difference between density and specific gavity? 4. How does a graph help us interpret scientific data? A. Density of a Solld (Use the "density of a solld demonstration" to collect data.) A.1 Mass of the solid A 2 Volume of the solid by displacement Initial w ater level (mL) Final water level with solid (mL) Volume of solid (mL) A 3 Calculating the density of the solid Show calculations Questions and Problems (Show complete setup) Q.1 An object made of aluminum has a mass of 8.37 g. When it was placed in a graduated cylinder containing 20.0 mL of water, the water level rose to 23.1 ml. Calculate the density and specific gravity of the object B. Density of a Liquid (Use the "Sugar-Water Experiment" to collect data) B.1 Volume of Liquid Type of liquid sugar water B.2 Mass of Liquid Mass of beaker Mass of beaker + liquid Mass of liquid B.3 Density of a Liquid Density Calculations for density) C. Specific Gravity C.l Specific gravity (Show calculations, calculated from B.3) Questions and Problems (Show complete setups) 02 What is the mass of a solution that has a density of 0.,775 g/mL and a volume of 50.0 ml? 03 What is the volume of a solution that has a specifie gravity of 1.2 and a mas of 185

17. SSE can never be a. larger than SST c. equal to 1 b. smaller than SST d. equal to zero 18. A regression analysis between sales (in S1000) and price (in dollars) resulted in the following equation Y 50,000 -X The above equation implies that an a. increase of $1 in price is associated with a decrease of $8 in sales b. increase of $8 in price is associated with an increase of $8,000 in sales c. increase of $1 in price is associated with a decrease of $42,000 in sales d. increase of $1 in price is associated with a decrease of $8000 in sales Exhibit 12-6 Dependent Variable 20 25 32 43 Independent Variable 12 19. Refer to Exhibit 12-6. The slope of the regression equation is a. 120.348 b. 12.1965 c.-2.5435 d. 2.5435 Refer to Exhibit 12-6. The y intercept is a. 120.348 b. 12.1965 c. -2.5435 20. d. 2.5435

1. Three students have different demands for doughnuts. André's demand is given by Q = 5 - P; Carlene's demand is given by Q = 6 - 2P; Cooper's demand is given by Q = 4 -0.5P. a. Derive the market demand curve for doughnuts algebraically. b. Graph the market demand curve for doughnuts. Pay special attention to any kinks in the market demand!

Plus x: A first function Assign y with 5 plus x. Ex: If x is 2, then y is 7. If x is 19, then y is 24. When done writing and testing your function, press "Submit for Assessment", which will automatically apply various test calls to your function Assessment Check if IncreaseValue(2) returns 7 Check if IncreaseValue (19) return 24

QUESTION 16/17 A customer is traveling to a branch office, and the network administrator provides her with a static IP address for her laptop Which should the customer do to use the static IP address? Run the command "ipconfig configure static" Assign the static IP in network adapter settings Switch the button from dynamic to static on her laptop Disconnect from WiFi and use an Ethernet cable Type the IP address into the browser