Math 0092                                                                                             Name ________________________

Review Test 3
Chapters 5, 6 and 7 (Martin-Gay)

Leslie

Solutions:

 

  1. 25% of what number is 44?                                                 __________

Ans: 176

  1. A CNN poll shows that 244,196 out of 287,149 people felt that the American soldiers were justified in firing at a van that didn’t stop at an army checkpoint in Iraq.  What percent of people felt that they were not justified?  Round to the nearest tenth of a percent.

Ans:15%

  1. A man is 5 feet 6 inches tall and casts a 18 foot long shadow at the same time a flagpole casts a 75 foot long shadow.  How tall is the flagpole to the nearest tenth of a foot?

Ans: 22ft 11 inches tall

  1. Similar triangles and Pythagorean Theorem.

 

  1. The population in Minnesota in 1990 was 4,375,099.  In 2000 the population was 4,919,479.  What was the percent increase in population from 1990 to 2000? Round to the nearest 10th of a percent.

13.1% increase

  1. In 1990 the population of Washington D. C. was 606,900.  In 2000 the population decreased to 572,059.  What was the percentage decrease over this time?  Round to the nearest tenth of a percent.

Ans: 5.7% decrease

  1. A new computer has a sales price of $799.00.  If the tax rate is 6.5%, what will be the final price of the computer?

Ans: $850.94

  1. Jeff’s sales of refrigeration units didn’t go as well this past year with the downturn of the economy.  He only sold $550,000 worth of equipment.  If his commission was $31,000, what was his commission rate?

Answer: 5.6% commission rate

  1. Ely has been saving money in his piggy bank for a new bike.  He found a sale in the K-Mart ads, for 20% off bikes.  The bike he wants originally cost $39.99.  How much does he have to pay for the bike?  Sales tax is 6.5%.

Answer: $34.07

  1. Cindy borrows $10,000 at 3.4% simple interest for 3 years.  ( 2 points each part)
    1. How much interest does she have to pay back?           

Answer: $1020

    1. If she pays this debt off each month, how much are her monthly payments?

Answer: $306.11

  1. The following line graph shows the Dow Jones Industrial Average, DJIA, verses  the time of day on April 1st 2003                               

    1. What was the value of the DJIA at 10 am?                                _7988_______
    2. What was the percentage increase from its lowest to highest point of the day?     Round to the nearest 10th of a percent.                 1.4%________           
    3. What was the percentage decrease  from its highest point until the end of the day?   Round to the nearest 10th of a percent.         

Approximately .6%    ________

 

 

  1. The total number of people who answered an ESPN poll about the biggest surprise on opening day was 108,233.

 

Biggest Surprise on Opening Day 2003

How many people are in each category?

Glavine: 24461

Maddux: 6927

D-Rays: 20781

Jeter: 33769

Johnson: 22295

  1. Fill in the following chart.  Write all fractions in lowest terms.

Fraction

Decimal

Percent

.375

37.5%

9/25

.36

36%

1.1

111%

1/200

.005

.5%

 

  1. Write the following decimal in words:  .0042

Answer: Forty-two ten thousandths

  1. Write <, > or = between the following numbers:  .000523 < .00053

 

  1. Find the circumference and area of a circle whose radius is 8.3 cm.  Use 3.14 as Pi.

C = 52.124 cm

A = 216.3146 square centimeters

 

  1. Find the area of the shaded region of the above figure.

Answer: 5.34 square centimeters

 

Solve the following equations:

  1. -.9x = 7.3x + 2.05

Answer: x = -.25

  1. .4(.3x – 2.1) + 1.2 = .24x

Answer:                 x = 3

 

Calculators allowed from here on.  Round to the nearest hundredth where appropriate.

  1. Find the unit price of a 24 ounce box of cereal which costs $3.75.

Answer:  $.15625 / ounce

  1. Which is the better deal:  Validate your answers.
    1. A 24 ounce box of cereal which costs $3.75 or a 20 ounce box of cereal which costs $3.25? 

The larger is a better deal.  It’s unit price is $.15635/ ounce while the smaller box costs $.1625/ ounce.

    1. What if you have a $1.00 off coupon?

24 ounce now costs $.114583/ ounce while the 20 ounce box costs $.1125/ ounce.  Now the 20 ounce box is the better deal.

 

  1. Solve the following equation:.

.5 – .3(.2x + 2.5) = -.8 (4x + 7)

.5 - .6x - .75 = -3.2x – 5.6

-.6x  - .25 = -3.2x – 5.6

2.6x = – 3.1

X = -31/26

 

  1. Solve the following equation:

-x + .5 = -2.6

                        -x = -3.1

                        x = 3.1

  1. Solve the following equation:

2x – 4.3 = 7.2

                        2x = 11.5

                        x = 5.75