Lesson 10: Practice Problems

Problem 1

In a city in Ohio, the sales tax rate is 7.25%. Complete the table to show the sales tax and the total price including tax for each item.

item	price before tax ($)	sales tax ($)	price including tax ($)
pillow	$8.00$
blanket	$22.00$
trash can	$14.50$

Problem 2

The sales tax rate in New Mexico is 5.125%. Select all the equations that represent the sales tax, $t$ , you would pay in New Mexico for an item of cost $c$ ?

$t = 5.125 c$
$t = 0.5125 c$
$t = 0.05125 c$
$t = c \div 0.05125$
$t = \frac{5.125}{100} c$

Problem 3

Here are the prices of some items and the amount of sales tax charged on each in Nevada.

cost of item ($)	sales tax ($)
$10$	$0.46$
$50$	$2.30$
$5$	$0.23$

What is the sales tax rate in Nevada?
Write an expression for the amount of sales tax charged, in dollars, on an item that costs $c$ dollars.

Problem 4 From Unit 4 Lesson 9

Find each amount:

3.8% of 25
0.2% of 50
180.5% of 99

Problem 5 From Unit 4 Lesson 8

On Monday, the high was 60 degrees Fahrenheit. On Tuesday, the high was 18% more. How much did the high increase from Monday to Tuesday?

Problem 6 From Unit 3 Lesson 4

Complete the table. Explain or show your reasoning.

object	radius	circumference
ceiling fan	$2.8 ft$
water bottle cap	$13 mm$
bowl		$56.5 cm$
drum		$75.4 in$