Real-World Application with Integers
Name:___________________________________
Date: _______________________
Class Period: _______________
1. Disc Golf is a version of golf played with discs that are thrown at a target on each hole. Par is the
expected number of throws needed to hit the target. Your score for each hole is the number of
throws you make above or below par, and the player with the least total score wins. The Table
gives the scores of two players for 9 holes of disc golf. Use the following table for the next several
questions:
Hole Par Kyra Mark
1
2
+3
+1
2
4
-1
0
3
4
+1
-1
4
3
-1
+2
5
2
0
+1
6
2
+1
+1
7
3
-1
-1
8
2
?
?
9
4
?
?
What was each player’s total score after the 7 hole?
Mark scores -1 on the 8 hole. If the scores were tied after the 8 hole what did Kyra score?
Kyra scored +2 on the 9 hole, and mark scored 0. Who won the game?
2. A local bike shop keeps track of each day’s income and expenses by hand. The sum of all of the
transactions for the day was $20. What amount should have been recorded for the new wrench
set?
Amount
Transaction Type
$95
Bicycle sold
$5
Flat tire repair
?
New Wrench Set
$35
Cycling Jersey Sold
-$40
Newspaper Ad
3. In Fairfield, Montana, on December 24, 1924, the air temperature dropped a record amount. At
noon, the temperature was 63 degrees Fahrenheit. Twelve hours later, the temperature was -21
degrees Fahrenheit. What was the change in temperature?
4. Your class is sponsoring a school dance. Your expenses will be $750 for a disc jockey, $75 for
security, and $40 for advertisements. You will charge $6 per person.
Will your class make a profit if 125 people attend? What if 250 people attend?
5. To convert from Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature and
multiply by 5/9. Using the equation, complete the table below:
C= 5/9(F-32)
Fahrenheit
212°F
32°F
-40°F
-76°F
Celsius
6. Most of Greenland is covered with ice that in some places is almost two miles thick. Scientists
estimate that 3 feet of this ice melts each year. Find the change in the thickness of the ice after 10
years.
7. Suppose an airplane descends 4 feet every second prior to landing. Write and simplify an
expression to represent the change in the altitude of the airplane after 10 seconds.
8. In the Panama Canal, a system of locks releases water from upper chambers into lower chambers
so that ships can move through the canal. The water level in an upper chamber begins at 72 feet
and falls about 3 feet every minute for 9 minutes. Write and evaluate an expression that
represents the change in the water depth after 9 minutes. Then find the depth of the water after 9
minutes.
9. The table shows the high temperatures for four days in January in Bangor, Maine. Find the mean
of the temperatures.
Day
Temperature
Monday
-7C
Tuesday
-4C
Wednesday
-7C
Thursday
-2C
10. A submarine’s elevations over several hours are -284 ft, -245 ft, -372 ft, -356 ft, -343 ft. Find the
mean of the elevations.