Basic Mathematics for College Students

22. NEW YORK CITY Refer to
    the illustration on the right.
    Central Park, which lies in the
    middle of Manhattan, is the
    city’s best-known park. If it is
    2.5 miles long and 0.5 mile
    wide, what is its area?


23. TELEPHONE BOOKS
    To print a telephone book,
    565 sheets of paper were used.
    If the book is 2.26 inches thick,
    what is the thickness of each
    sheet of paper?


24. ACCOUNTING At an ice-skating complex, receipts
    on Friday were $130.25 for indoor skating and
    $162.25 for outdoor skating. On Saturday, the
    corresponding amounts were $140.50 and $175.75. On
    which day, Friday or Saturday, were the receipts
    higher? How much higher?


25. CHEMISTRY In a lab experiment, a chemist mixed
    three compounds together to form a mixture
    weighing 4.37 g. Later, she discovered that she had
    forgotten to record the weight of compound C in her
    notes. Find the weight of compound C used in the
    experiment.

31.

32. (Work in terms of fractions.)


33. a. Graph , , and on a number line. Label each
    point using the decimal equivalent of the fraction.

b. Graph , , , and on a number

line. (Hint:When necessary, use a calculator or

square root table to approximate a square root.)

34. SALADS A shopper purchased pound of potato^34

− 5 − 4 − 3 − 2 −10 12 34 5

11612  19  15

− 1 01

(^3823)  (^45)

2

3

0.7

8  2124  60  61812

Chapter 4 Test 409

Central Park North

Central Park South

Central Park West

Fifth Ave.

Weight

Compound A 1.86 g

Compound B 2.09 g

Compound C?

Mixture total 4.37 g

26. WEIGHT OF WATER One gallon of water weighs
    8.33 pounds. How much does the water in a -gallon
    jug weigh?


27. Evaluate the formula for and
    .


28. Write each fraction as a decimal.

a. b.

Evaluate each expression.

29. 
    

30. a

2

5

b

2

 6 `6.2 3

1

4

`

4.1(3.2)(0.4)^2

5

12

17

50

r1.7

C 2 pr p3.14

(^2 12)
salad, priced at $5.60 per pound, and pound of
coleslaw, selling for $4.35 per pound. Find the total
cost of these items.

35. Use a calculator to evaluate for
    and.


36. Write each number in decimal form.

a. b.

37. Fill in the blank: because.


38. Place an ,, or an symbol in the box to make a
    true statement.
    a.

b. 0.3

c.

d. 0.45

Evaluate each expression without using a calculator.

39.

40.

41. Evaluate each square root without using a calculator.
    a.

b.

c.

d.

42. Although the decimal 3.2999 contains more digits
    than 3.3, it is smaller than 3.3. Explain why this is so.

 1121

1225

1 1.69

 1 0.04

B

1

36



B

1

25

 2125  3149

0.45

0.4

B

16

81

3

8

6.78 6.79

1144 ^2  144

2

9

16



27

25

a 12 b 35

c 2 a^2 b^2

1

3