704 Chapter 8 Summary and Review
Check
The length of the longer piece of wire, 27 feet, is 9 feet longer than
the length of the shorter piece, 18 feet. Adding the two lengths, we getThis is the original length of the wire,
before It was cut into two pieces.
The results, 18 ft and 27 ft, check.18
27
45
Form an equation and solve it to answer each question.- FINANCING A newly married couple made a
$25,000 down payment on a house priced at
$122,750. How much did they need to borrow? - PATIENT LISTS After moving his office, a doctor
lost 53 patients. If he had 672 patients left, how
many did he have originally? - CONSTRUCTION DELAYS Because of a
shortage of materials, the final cost of a construction
project was three times greater than the original
estimate. Upon completion, the project cost $81
million. What was the original cost estimate? - SOCIAL WORK A human services program
assigns each of its social workers a caseload of 80
clients. How many clients are served by 45 social
workers? - COLD STORAGE A meat locker lowers the
temperature of a product 7° Fahrenheit every hour.
If freshly ground hamburger is placed in the locker,
how long would it take to go from room
temperature of 71°F to 29°F?
70. MOVING EXPENSES Tom and his friend split the
cost of renting a U-Haul trailer equally. Tom also
agreed to pay the $4 to rent a refrigerator dolly. In
all, Tom paid $20. What did it cost to rent the
trailer?
71. FITNESS The midweek workout for a fitness
instructor consists of walking and running. She
walks 3 fewer miles than she runs. If her workout
covers a total of 15 miles, how many miles does she
run and how many miles does she walk?
72. RODEOS Attendance during the first day of
a two-day rodeo was low. On the second day,
attendance doubled. If a total of 6,600 people
attended the show, what was the attendance on
the first day and what was the attendance on the
second day?
73. PARKING LOTS A rectangular-shaped parking lot
is 4 times as long as it is wide. If the perimeter of the
parking lot is 250 feet, what is its length and width?
74. SPACE TRAVEL The 364-foot-tall Saturn Vrocket
carried the first astronauts to the moon. Its first,
second, and third stages were 138, 98, and 46 feet tall
(in that order). Atop the third stage was a lunar
module, and from it extended a 28-foot escape
tower. How tall was the lunar module? (Source:
NASA)
REVIEW EXERCISES