Chapter 7.5-7.10 Jeopardy

110%

100

Write as a fraction in simplest form: 95%

19/20

200

18 is 9% of what number?

200

300

What percent of 7.2 is 45?

625%

400

How many liters of water must be evaporated from 20L of a 30% salt solution to produce a 50% solution?

8L

500

Yolanda invests $6000. Some of the money is invested in stocks paying in at 6% a year and some in bonds at 11% a year. She recieves a total of $580 each year from these investments. How much money is invested in stock and and how much money in bonds?

$1600 in stocks, $4400 in bonds

Hard Work

100

A pipe can fill a pool in 9 h. What part of the pool can it fill in 1 h?

1/9

200

Rita takes 3 h to type a report. What part of the typing can she do in 2 h?

2/3

300

Stan can load his truck in 24mins. If his brother helps him, it takes them 15mins to unload the truck. How long would it take for Stan's brother to unload the truck alone?

40mins

400

One pump can fill a water tank in 3h (hours), and another pump takes 5h. When the tank was empty, both pumps were turned on for 30 minutes and then the faster pump was turned off. How much longer did the slower pump have to run before the tank was filled?

3 2/3 h

500

Jeff can weed the garden in 4 h. His wife Brenda takes the same amount of time. After they worked together for 1 h, their son Rory helped them finish in 1/2 h. How long would it have taken Rory by himself?

2 hours

Negative Exponents

100

Give answers using positive exponents:

4^-3

1/64

200

Give answers using positive exponents:

(5x)^-2

1/25x²

300

Give answers using positive exponents:

u^-4/u¹⁰

1/u¹⁴

400

Give answers using positive exponents:

(3^-1 + 3²)^-1

3/28

500

Give answers using positive exponents:

(b^-3/b^-6)⁴

b¹²

Scientific Notation

100

State in decimal form:

3.6 x 10⁶​​​​

3,600,000

200

State in scientific notation:

0.00075

7.5 x 10^-4

300

State in scientific notation:

(3 x 10^-8)(1.2 x 10⁴)

3.6 x 10^-4

400

State in scientific notation:

1.08x10⁸/3x10^-10

3.6x10¹⁷

500

State in scientific notation:

(2x10⁵)² / (8x10^-3)(5x10¹²)

1 x 10⁰

Grab Bag

100

How many Harry Potter films are there?

8

200

In the "Back to the Future", what speed did the DeLorean have to reach to activate the flux capacitor?

88mph

300

What is the official brand of baseballs used in the Major Leagues?

Rawlings

400

What is the only NFL team to score 3 touchdowns in less than a minute. 

New England Patriots

500

If 11 plus two equals one, what does nine plus five equal?

2pm