7) Solve the equation and show the check of your solution(s). Use the method discussed in Section 6.5 of our text, clearing fractions from the equation first.
8) When Linda and Martin work together painting one room, they can complete the work in 5 hours. When Linda works alone, it takes her 7 hours to paint the same room. How long would it take Martin to paint the room alone?
9) A car travels 280 miles in the same time that a motorcycle travels 240 miles. If the car’s speed is 10 miles per hour more than the motorcycle’s, find the speed of the car and the speed of the motorcycle.
10) The weight of an object on or above the surface of Earth varies inversely as the square of the distance between the object and Earth’s center. If a person weighs 132 pounds on Earth’s surface, find the person’s weight 900 miles above the surface of the Earth. Assume that the radius of the Earth is 4000 miles. Round your answer to the nearest whole pound.
End of quiz: please remember to sign and date the statement in the box on the first page of the quiz.
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