1)Mrs. Kurth is redesigning her backyard garden. If she would like to quadruple the area of her current garden, then by what scale factor should she increase its dimensions? 2)The territory of a small town can be modeled by a rectangle with dimensions 6 miles and 7.5 miles. If the town has a population of 14,850, then what is its population density?

3)The density of aluminum is 2800 kg/m3. What is the mass of a solid cube of aluminum with side lengths of 0.5 meters?

4)A cylindrical storage tank is being designed. The tank will be filled with propane, which contains 2550 Btu per cubic foot. The tank must hold at least 30,000 Btu of energy and must have a height of 2 feet. Under these constraints, what must be the radius of the tank? Round your answer to the nearest tenth.