–
Using function notation:
1) Let
be the amount of sales tax owed on a purchase p. Explain what
you about the sales tax.
tells
Writing an equation in function notation:
2)
Evaluating Functions from Function Notation:
Let
, Evaluate g(x) by finding the following values:
3) g(-2)
4)
(
)
Evaluating Functions Using a Table:
First-Class Mail
Letter
Singleweight
Price
(ounces)
1
0.39
2
0.63
3
0.87
4
1.11
5
1.35
6
1.59
7
1.83
5) The cost of first-class delivery by the U.S. Postal service is af unction of
the weight of the letter. The table gives a list of prices of first-class letters
effective January 8, 2006. Use the table to evaluate the function for the
following weights: 3 oz, 4 oz.
Evaluating Functions Using a Graph:
6) The graph shows
a) Find
on the graph.
b) Find
on the graph.
7) Sales tax in Springfield, IL is 8% on all clothing purchases. Therefore the amount of tax a customer is
charged is a result of the total purchase price of the customer.
a) If Mrs. Stinson has $35.50 worth of clothing to purchase, how much sales tax is she going to pay?
b) Write a function that will represent a method of calculating sales tax on any purchase in Springfield.
c) What are the independent and dependent variables of the function?