Practice using the Python interpreter as a calculator: 1. The volume of a sphere with radius r is (4)/(3) πr^3 . What is the volume of a sphere with radius 5 ? 2. Suppose the cover price of a book is 24.95, but bookstores get a 40 % discount. Shipping costs 3 for the first copy and 75 cents for each additional copy. What is the total wholesale cost for 60 copies? 3. If I leave my house at 6: 52 am and run 1 mile at an easy pace (8: 15 per mile), then 3 miles at tempo (7:12 per mile) and 1 mile

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