Circles
Expressions & Equations
Simple Interest & Percent Change
Sales Tax, Discount, & Commission
Miscellaneous
100

The area of a circle is

What is A=πr2 

100

Simplify: 7w - 7z + 4w - 5z

11w - 12z

100
Denise measured the length of her yard to be 90 feet. The actual length is 86 feet. What is the approximate percent of error in her measurement?
4.7%
100
The regular price of a computer monitor is $185. It is on sale for 15% off. Sales tax is 8%. What is the cost of the computer monitor after the discount and sales tax are applied?
$169.83
100

On Monday, Alison made 12 out of the 22 basketball shots she attempted. At this rate, how many shots will Alison make on Tuesday, if she attempts 30 basketball shots?

16

200

The equation of the circumference of a circle 

What is C = 2πr

200

What is the value of x in the equation (3/4)(x + 4)=9?

8

200
In 1992, the population of a town was 8000 people. In 1997, the population was 14000. What was the percent increase in the population?
75%
200
Mary bought a shirt on sale for $15. The sales tax was 10%. If Mary paid with a $20 bill, what was her change.
$3.50
200

Gloria earned $14,000 commission in 25 weeks at her new sales position. At that rate, how much will Gloria earn in 52 weeks?

$29,120

300

The area of a circle with a radius of 4

What is 50.24

300
A square has sides with a length of 6. The sides of a scale copy with a constant of proportionality of 4 are...

What is 24?

300
Hannah estimated that a bottle could hold 2.2 liters. The actual volume of the bottle was 2 liters. What was the percent error in Hannah's measurements?
10%
300
Jamal's lunch costs $8.95, plus 6.5% sales tax. What is the total cost of Jamal's lunch, including sales tax?
$9.53
300
Apples cost $1.48 per pound at the grocery store. Sarah bought 6 pounds of apples. Steve bought 10 pounds of apples. How much more did Steve spend on apples?
$5.92
400

The circumference of a circle with a radius of 3

What is 18.84?

400

To transmit information on the internet, large files are broken into packets of smaller sizes. Each packet has 1,500 bytes of information. An equation relating packets to bytes of information b = 1500p is given by where p represents the number of packets and b represents the number of bytes of information. a. How many packets would be needed to transmit 30,000 bytes of information?

What is 20 packets?

400
My final balance after 48 months was $896. If I originally put $800 in the bank, what was the interest rate?
3%
400
Mark works at a clothing store and earns a 20% commission on his total sales. Last month, Mark sold $1500.00 in clothing sales. What was his commission last month?
$300
400

Mrs. Jones baked 48 cookies. Her son ate (1/4) of the cookies, then her husband ate (1/6) of the remaining cookies. How many cookies were left?

30 cookies

500

The area of a circle with a diameter of 7

What is 38.47?

500

Every package of a certain toy also includes 2 batteries. 

a. Use t for the number of toys and b for the number of batteries to write two equations relating the two variables.

t = 2b

b=t/2

500
What would my final balance be if I put $650 in the bank fr 60 months with an interest rate of 6%?
$845.00
500
Baseball cards cost $3.79 a pack. There is a 25% discount if 10 or more packs are purchased. Sales tax is 7%. If Terry bought 15 packs of cards, about how much did he pay?
$45.00
500
A company made a profit of 3.5 million dollars in 2005 and 1.75 million in 2006. If the company lost .5 million dollars each year for the next 4 years, what was the company's total profit from 2005-2010?
3.25 million
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