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The sales tax $t$ on a purchase is a function of the amount $a$ of the purchase. The sales tax rate in the city of East chester is 8$\% .$ a. Write a rule in function notation that can be used to determine the sales tax on a pur- chase in East chester.b. What is a reasonable domain for this function?c. Find the sales tax when the purchase is $\$ 5.00 .$d. Find the sales tax when the purchase is $\$ 16.50 .$

a) $t=8 \% \times a=0.08 \times a$b) $\mathbb{R}^{+}$c) $t=\$ 0.40$d) $t=\$ 1.32$

Algebra

Chapter 4

RELATIONS AND FUNCTIONS

Section 2

Function Notation

An Introduction to Geometry

Functions

Linear Functions

Polynomials

McMaster University

Baylor University

University of Michigan - Ann Arbor

Lectures

01:32

In mathematics, the absolu…

01:11

02:21

A verbal description of a …

01:38

Sales Tax If the sales tax…

05:45

The function $T(x)=0.15(x-…

02:04

TAXES State sales tax…

06:10

Taxes The function $T(x)=0…

04:10

00:41

Write a formula that descr…

05:52

Income Taxes The function<…

02:15

For each situation, if $x$…

02:41

A high school spends $\$ 7…

and this problem were asked to describe the sales tax T as a function of the price of the product A were given of the sales tax rate is 8% so the sales tax is a function of a 0.8 times a. Now he has to find the domain of the function. Since it's impossible to have a negative price, it makes sense that the lower limit of the domain is syrup, and there's no upper limit now. Asked to find sales tax if the price is five, so something the value of five into A This is your Quincy or eight times five. This is equal to 0.4 summer. Similarly, we can find the sales tax when the prices equals 16.5 by substituting the value of 16.5 into a, and this is equal to 1.32

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