Math 1030-7 Midterm 1

Math 1030-7 Midterm 1
Instructions: There are TWO parts in this exam, FIVE problems in each
part. Answer the questions in the spaces provided on the question sheets.
If you need more space, use the bottom of the last page, but remember to
indicate which problem you are doing. Partial credit will be awarded. Scientific
calculators are allowed. This exam is closed book and closed notes. Show you
work on each problem.
Part I: Basic problems
1. (10 points) Draw a Venn diagram for the following proposition and label all regions in your diagram.
All widows are women.
2. (10 points) Convert 5000 meters into miles. (1 mi = 1609.3 m)
3. (10 points) Convert 110 square yards into square feet.
4. (10 points) The population of the United States increased from 249 million in 1990 to 308 million
in 2010. Find the absolute change and relative change of the population.
5. (10 points) Use the following table to answer the question. What percentage of all secondary
teachers are female?
Elementary and middle school teachers
Secondary teachers
Part II: Advanced problems
6. Consider the following deductive argument:
All great basketball players must wear expensive shoes.
Shaquille O’Neal is a great basketball player.
Conclusion: He must wear expensive shoes.
(a) (5 points) Draw a Venn diagram for the first premise and label all regions in your diagram.
(b) (5 points) Check the validity of the argument using your diagram.
7. (10 points) You plan to travel to Japan and you are practicing how to deal with different measurement systems. Consider the following situation. Suppose pears at a store in Japan are priced at
950 yen per kilogram. What is the price of these pears in US dollars per pound if 1 US dollar is
117.9 yen and 1 kilogram is 2.2 pounds.
8. Suppose your car averages 38 miles per gallon of gasoline on the highway if your average speed is
55 miles per hour.
(a) (5 points) What is the driving time for a 2000-mile trip if you drive at an average speed of 55
miles per hour?
(b) (5 points) Assume a gasoline price of $2.90 per gallon. What is the gasoline cost for a 2000-mile
trip if you drive at an average speed of 55 miles per hour?
9. London (Reuters) 11/15/04:“U.S. light crude fell $1.80 to $45.60 a barrel, the lowest price since
(a) (3 points) Find the original price of U.S. light crude.
(b) (7 points) By what percentage did the price change?
10. (10 points) If a 34 ounce can of olives is 183% more money than a 12 ounce can of olives, which is
a better deal? Explain.