G. Practical Applications. If necessary, round to the nearest tenth unless other- wise directed. 1. Machine Trades A piece 616 in. long is cut from a steel bar 28; in. long. How much is left? 2. Life Skills An American traveling in Italy notices a road sign saying 85 km/h. What is this speed in miles per hour rounded to the nearest whole number? 3. Automotive Trades An automotive technician testing cars finds that a cer- tain bumper will prevent damage up to 9.0 ft/sec. Convert this to miles per hour. 4. Construction Marble weighs approximately 170 pounds per cubic foot. How many tons are needed for a job requiring 1460 cu ft of marble? (Round to the nearest ton.) 5. Carpentry What size wrench, to the nearest 32nd of an inch, will fit a 0.455-in. bolt head? 6. Metalworking The melting point of a casting alloy is 260 C. What tem- perature is this on the Fahrenheit scale? 7. Sheet Metal Trades What area of sheet metal in square inches is needed to construct a vent with a surface area of 6.50 sq ft? 8. Life Skills How many gallons of gas are needed to drive a car exactly 350 miles if the car normally averages 18.5 mi/gal