An unknown metal has been found and the following experimental results have been tabulated in the table below. The table contains the grams of the unknown metal and the volume in milliliters of water displacement. Find a linear model that expresses volume as a function of the mass. grams Volume in ml 20 145.6 21.5 150.3 23 164.1 24.5 173.1 26 185.5 27.5 198.2 29 204.8 A) Write the linear regression equation for the data in the chart. Volume = to 3 decimal places x + where x is the grams of the unknown metal. Round your answers B) If the mass of an unknown metal is 18, using your un-rounded regression equation find its predicted volume. Round your answer to 1 decimal place. mL

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