I do not know what x = to..... sorry but i tried it see..... 0.
61. 62.
63. 64.
65. 66.
67. 68.
69. 70.
In Exercises 71–74, assume that the domain of is
the set Determine the set of ordered
pairs that represents the function
71. 72.
73. 74.
Exploration In Exercises 75–78, match the data with one
of the following functions
and determine the value of the constant that will make
the function fit the data in the table.
75.
76.
77.
78.
In Exercises 79–86, find the difference quotient and
simplify your answer.
79.
80.
81.
82.
83.
84.
85.
86.
87. Geometry Write the area of a square as a function of
its perimeter
88. Geometry Write the area of a circle as a function of its
circumference C.
A
P.
A
x 8 fx f8
x 8 fx x , 23 1,
x 5 fx f5
x 5 fx 5x, ,
ft f1
t 1 ft , t 1
1
t 2
,
gx g3
x 3 gx , x 3
1
x2
,
fx h fx
h fx 4x , h 0 2 2x,
fx h fx
h fx x , h 0 3 3x,
f5 h f5
h fx 5x x , h 0 2
,
f2 h f2
h fx x , h 0 2 x 1,
c
f
x cx, g
x cx2, h
x cx, and r
x c
x
fx x 1 fx x 2
fx x fx x 2 3 2
f.
A {2, 1, 0, 1, 2}.
f
fx x 5
x2 9 fx x 4
x
fx x 6
6 x fs s 1
s 4
hx 10
x 2 2x gx 1
x 3
x 2
fx
4 x fx 2 3x
4 1 x2
ft
3 g y y 10 t 4
s y 3y
y 5
ht 4
t
gx 1 2x2 fx 5x2 2x 1
fx x 4, gx 2 x
fx 3x 1, gx x 1
gx 2x2 fx x4 2x 2,
fx x gx 3x 3 2 2x
The normal rule to remember is 68-95-99.7, i.e. plus or minus three sigma corresponds to 99.7% of the probability. That leaves 0.3% in the two tails, or 0.15% in the tail above 3 sigma.
