SOLUTION: How do you write a function rule to describe the amount of sales tax as a function of the price of an item purchased if the sales taxis 6%?

Question 424839: How do you write a function rule to describe the amount of sales tax as a function of the price of an item purchased if the sales taxis 6%?
Answer by JoeFourier(1) (Show Source): You can put this solution on YOUR website!
First you have to think about how to write 6% in a way that we can understand mathematically.
To do this think of what 6% means. 6% means 6 out of 100. So in fractions we have 6/100 and in decimals we have .06
For a function rule we will use the decimal representation, .06
Now, to solve for the amount of sales tax we have to multiply our tax rate, .06, by the price of the item.
Let x be the price of the item. Then we can call our function f(x).
Since we need to multiply the price by the tax rate we now have:
f(x) = (.06)x
RELATED QUESTIONS
Write a function rule to describe. The selling price s(c) after a 45% markup of an item... (answered by ewatrrr)

The sales tax in one state is 7%. What is a function rule for finding the total cost of (answered by stanbon)

a. State sales tax S is directly proportional to retail price p . An item that sells for... (answered by Theo,MathTherapy)

a. State sales tax S is directly proportional to retail price p . An item that sells for... (answered by Boreal)

An item has a listed price of $45. If the sales tax rate is 7%, how much is the sales... (answered by MathLover1)

The sales tax in one state is 7%. Write a function rule for finding the total cost of an... (answered by richwmiller)

The sales tax in one state is 5%. Write a function rule for finding the total cost of an... (answered by olliegray1,jim_thompson5910)

Sales tax in one state is 7%. Write a function rule for finding the total cost of an item (answered by edjones)

The sales tax in one state is 7%. Write a function rule for finding the total cost of an... (answered by MathLover1)