Math 103x Exam 1 Review Sp23.pdf

Math 1030/1035 Spring 23 Name ________________________________________ Instructor name and section Modules 1-3 Exam 1 Any calculator allowed , assuming it doesn’t have internet capability (no phone calculators) 1 I Measur ement and Pr oblem Solving 1 Basic Conversions 1) Given the conversion units in the table: Convert the following, rounding to the nearest tenth: i. 15.5 gallons to quarts (1 point) Answer: ______________quarts ii. 24.2 pounds to kilograms (2 points) Answer: ______________kilograms iii. 2.3 kilometers to yards (3 points) Answer: ______________yards 1) Given the conversion units in the table: Convert the following, rounding to the nearest tenth: i. 49.25 gallons to quarts (1 point) Answer: ______________quarts ii. 35.2 pounds to kilograms (2 points) Answer: ______________kilograms iii. 3.2 kilometers to yards (3 points) Answer: ______________yards 1 kilometer = 1000 meters 1 yard = 0.914 meters 1 kilogram = 2.2 pounds 1 gallon = 4 quarts 1 gallon = 3.79 liters 1 kilometer = 1000 meters 1 yard = 0.914 meters 1 kilogram = 2.2 pounds 1 gallon = 4 quarts 1 gallon = 3.79 liters

2 1) Given the conversion units in the table: Convert the following, rounding to the nearest tenth: i. 60.5 gallons to quarts (1 point) Answer: ______________quarts ii. 52.8 pounds to kilograms (2 points) Answer: ______________kilograms iii. 1.7 kilometers to yards (3 points) Answer: ______________yards 1) Given the conversion units in the table: Convert the following, rounding to the nearest tenth: i. 79.75 gallons to quarts (1 point) Answer: ______________quarts ii. 37.4 pounds to kilograms (2 points) Answer: ______________kilograms iii. 3.8 kilometers to yards (3 points) Answer: ______________yards 2 Borrowing a nd Carrying wit h Uni ts 2) Alejandro has chocolate bars weighing 2 lb 12 oz, and 1 lb 13 oz. There are 16 oz in 1 lb. i. (3 points) How much in total do these bars weigh? Write your answer in lb and oz. 1 kilometer = 1000 meters 1 yard = 0.914 meters 1 kilogram = 2.2 pounds 1 gallon = 4 quarts 1 gallon = 3.79 liters 1 kilometer = 1000 meters 1 yard = 0.914 meters 1 kilogram = 2.2 pounds 1 gallon = 4 quarts 1 gallon = 3.79 liters

3 Answer: ____________lb ___________oz ii. (3 points) Alejandro wants to bring 11 lb of chocolate on a trip. Including the two bars he already has, how much more does he need? Specify your answer in lb and oz. Answer: ____________lb ___________oz 2) Alejandro has chocolate bars weighing 3 lb 11 oz, and 2 lb 14 oz. There are 16 oz in 1 lb. i. (3 points) How much in total do these bars weigh? Write your answer in lb and oz. Answer: ____________lb ___________oz ii. (3 points) Alejandro wants to bring 8 lb of chocolate on a trip. Including the two bars he already has, how much more does he need? Specify your answer in lb and oz. Answer: ____________lb ___________oz 2) Alejandro has chocolate bars weighing 1 lb 10 oz, and 2 lb 11 oz. There are 16 oz in 1 lb. i. (3 points) How much in total do these bars weigh? Write your answer in lb and oz. Answer: ____________lb ___________oz ii. (3 points) Alejandro wants to bring 9 lb of chocolate on a trip. Including the two bars he already has, how much more does he need? Specify your answer in lb and oz.

4 Answer: ____________lb ___________oz 2) Alejandro has chocolate bars weighing 2 lb 8 oz, and 1 lb 15 oz. There are 16 oz in 1 lb. i. (3 points) How much in total do these bars weigh? Write your answer in lb and oz. Answer: ____________lb ___________oz ii. (3 points) Alejandro wants to bring 10 lb of chocolate on a trip. Including the two bars he already has, how much more does he need? Specify your answer in lb and oz. Answer: ____________lb ___________oz 3 Reaction Time to Di sta nce 3) (6 points) It is estimated that a driver takes, on average, 2 seconds from seeing an obstacle to reacting by swerving or applying the brakes to stop. How far will a car, moving at 45 miles per hour, travel (in feet) before a driver reacts to an obstacle? Round the distance to one decimal place. (Hint: 1 mile = 5280 feet) Answer: _________________feet 3) (6 points) It is estimated that a driver takes, on average, 2 seconds from seeing an obstacle to reacting by swerving or applying the brakes to stop. How far will a car, moving at 65 miles per hour, travel (in feet) before a driver reacts to an obstacle? Round the distance to one decimal place. (Hint: 1 mile = 5280 feet)

5 Answer: _________________feet 3) (6 points) It is estimated that a driver takes, on average, 2 seconds from seeing an obstacle to reacting by swerving or applying the brakes to stop. How far will a car, moving at 80 miles per hour, travel (in feet) before a driver reacts to an obstacle? Round the distance to one decimal place. (Hint: 1 mile = 5280 feet) Answer: _________________feet 3) (6 points) It is estimated that a driver takes, on average, 2 seconds from seeing an obstacle to reacting by swerving or applying the brakes to stop. How far will a car, moving at 35 miles per hour, travel (in feet) before a driver reacts to an obstacle? Round the distance to one decimal place. (Hint: 1 mile = 5280 feet) Answer: _________________feet 4 Echo 4) (6 points) Carla is standing at the edge of a canyon. She yells loudly and hears an echo 2.1 seconds later. How far away is the other side of the canyon in meters? You may assume the speed of sound is 340 meters per second. Round to the nearest tenth, as necessary.

6 trig Answer: _________________meters 4) (6 points) Carla is standing at the edge of a canyon. She yells loudly and hears an echo 3.5 seconds later. How far away is the other side of the canyon in meters? You may assume the speed of sound is 340 meters per second. Round to the nearest tenth, as necessary. Answer: _________________meters 4) (6 points) Carla is standing at the edge of a canyon. She yells loudly and hears an echo 4.3 seconds later. How far away is the other side of the canyon in meters? You may assume the speed of sound is 340 meters per second. Round to the nearest tenth, as necessary. Answer: _________________meters 4) (6 points) Carla is standing at the edge of a canyon. She yells loudly and hears an echo 3.1 seconds later. How far away is the other side of the canyon in meters? You may assume the speed of sound is 340 meters per second. Round to the nearest tenth, as necessary. Answer: _________________meters

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