5. For each variable below, circle all the words that correctly describe it (a) A store's inventory program keeps track of the number of items available for sale. Quantitative Qualitative Continuous Discrete (b) A botanist measures the heights of a collection of California poppies. Quantitative Qualitative Continuous Discrete (c) A coffee roaster keeps track of the amount of time each batch of coffee is roasted. Quantitative Qualitative Continuous Discrete (d) A student asks each of her friends if they have a currently valid passport. Quantitative Qualitative Continuous Discrete

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6. Cost A farmer wishes to enclose a rectangular field of area 450 square feet using an existing wall as one of the sides. The cost of the fence for the other three sides is $3 per foot. Find the dimensions of the rectangular field that minimizes the cost of the fence.