Mathematical Applications for the Management, Life, and Social Sciences 11th Edition by Ronald J. Ha
a. 2576
b. 2075
c. 2005
d. 4941
e. 2074
ANSWER: a
40. The combination of cold temperatures and wind speed determine what is called wind chill. The wind chill is a temperature that is the still-air equivalent of the combination of cold and wind. When the wind speed is 25 mph, the wind chill WC depends on the temperature t (in degrees Fahrenheit) according to . For what temperatures does it feel at least 30°F colder than the air temperature? That is, find t such that . Round your answer to two decimal places.
a.
b.
c.
d.
e.
ANSWER: a
41. Use the values in the following table.
x-7-1034.2911141822
y001591235222260
If the function defined by the table is denoted by f, so that is an input or an output of f ?
a. is an input of f.
b. is an output of f.
ANSWER: b
42. Determine whether the values in the table describe x as a function of y.
x–7–1034.2911141822
y–1015101135272260
a. True
b. False
ANSWER: True
43. Is the relation defined by the table a function of x?
x126811
y–4–45165
a. Yes
b. No
ANSWER: Yes
44. The relation defined by the table is a function. Choose the correct domain and range.
x124812
y–4–45165
a.
b.
c.
d.
e.
ANSWER: d
45. Is the relation defined by the table a function of x?
x–10232
y02469
a. Yes
b. No
ANSWER: No
46. Which of the graphs below represent y as a function of x?
(a)
(b)
a. both (a) and (b)
b. neither (a) nor (b)
c. only (b)
d. only (a)
ANSWER: c
47. Which of the graphs below represent y as a function of x?
(a)
(b)
a. only (a)
b. only (b)
c. neither (a) nor (b)
d. both (a) and (b)
ANSWER: a
48. If , is y a function of x?
a. Yes
b. No
ANSWER: Yes
49. If is y a function of x?
a. Yes
b. No
ANSWER: No
50. If , is y a function of x?
a. Yes
b. No
ANSWER: No
51. If , find .
a. 3
b. 15
c. 27
d. –3
e. 45
ANSWER: c
52. If , find .
a. 39
b. –15
c. 45
d. –3
e. –21
ANSWER: a
53. If , find .
a. –2
b. 0
c. –2000
d. –200
e. 100
ANSWER: b
54. If , find .
a.
b.
c.
d.
e.
ANSWER: d
55. Let . Is ?
a. Yes
b. No
ANSWER: No
56. Let . Find .
a.
b.
c.
d.
e.
ANSWER: e
57. Let and . Does for all values of x and h?
a. Yes
b. No
ANSWER: No
58. Let and . Does ?
a. Yes
b. No