See attached document.

  1. Use the given pair of functions to find the following values if they exist.

(Hint: Please see section 5.1 of the ebook)



  1. (g ◦ f)(0)

  1. (f ◦ g)(−1)

  1. (g ◦ f)(−3)

  1. (f ◦ g) (-2)

  1. (f ◦ f)(−2)


  1. Use the given pair of functions to find and simplify expressions for the following functions and state the domain of each using interval notation.

(Hint: Please see section 5.1 of the ebook)

  1. (g ◦ f)(x)


  1. (f ◦ g)(x)

  1. (f ◦ f)(x)

  1. Show that the given function is one-to-one and find its inverse. Check your answers algebraically and graphically. Verify that the range of f is the domain of f inverse and vice-versa.

(Hint: Please see section 5.2 of the ebook)

  1. Show that the given function is one-to-one and find its inverse. Check your answers algebraically and graphically. Verify that the range of f is the domain of f inverse and vice-versa.

(Hint: Please see section 5.2 of the ebook)

Analytically show that the function

  1. is one-to-one, find its inverse, and evaluate the following:

(Hint: Please see section 5.2 of the ebook)












  1. Rationalize the denominator, and simplify.

(Hint: Please see section 0.9 of the ebook, exercise number 30, and page 120 in Section 0.9)

  1. Solve the equation

(Hint: Please see section 5.3 of the ebook, exercise numbers 22 and 23)

(This means x raised to the power of 3/2 is equal to 27)






  1. Find the inverse of the function from the ‘procedural perspective’ discussed in Example 6.1.5

(Hint: Please see section 6.1 of the ebook)


  1. Find the inverse of the function from the ‘procedural perspective’ discussed in Example 6.1.5

(Hint: Please see section 6.1 of the ebook)



  1. (Hint: Please see section 6.5 of the ebook, Exponential Regression Model)



The data at the right shows the cooling temperatures of a freshly brewed cup of coffee after it is poured from the brewing pot into a serving cup.  The brewing pot temperature is approximately 180º F.



 

Time (mins)

Temp ( º F)

179.5

168.7

158.1

149.2

14

141.7

16

134.6

20

125.4

23

123.5

25

116.3

27

113.2

30

109.1

33

105.7

38

102.2

40

100.5


a) Find an exponential regression model of the form y = a * b^x to represent the above date, where x is the number of minutes, and y is the temperature of the cup of coffee

 

b.)

Graph the exponential regression model.

 

c.)

Decide whether the model is a "good fit" to represent this data.

 

 

d)

When is the coffee at a temperature of 92 degrees?

 

e.)

What is the predicted temperature of the cup of coffee after 50 minutes?