Ch. 1 & 2 Test Review

Equations

100

6x - 10 = 10x + 2

x = -3

200

10/(x+2)=5/9

x = 16

300

-108 = -8(x + 6) - 4

x = 7

Word Problems

100

Rihanna solves 14 math problems in 3 minutes. At this rate, how long would it take her to solve 50 math problems? Round to the nearest hundredth.

10.71 minutes. 

200

The difference of 10 and a number is half that number increased by 4. Set up an equation, and then solve. 

10 - x = .5x + 4

x = 4

300

Josh brings in a large collection of rocks. Cooper steals half of this collection. Then, Garrett finds 7 rocks to add to the collection. Josh now has 67 rocks. How many rocks did Josh start with? 

120

Solving for Variables

100

Solve: x = pr - 1 for r

r=(x+1)/p

200

Solve for z. 

x = (4y + z)/2

2x - 4y = z

300

Solve for x.  

-8k+2y-x=r

x=-8k+2y-r

Simplifying/Evaluating Expressions

100

(4(13)-52)/(2+8

0

200

Evaluate if x = 2 and y = -1

x^2-xy

6

300

Simplify. 

-2(x - 1) - 5x + 4(2x - 6)

x - 22

Unit Conversion

100

Convert 3 cups to ounces 

(1 cup = 8 ounces)

24 ounces

200

Convert 1400 yards to miles. Round to the nearest tenth. 

(1 yard = 3 feet) 

(5280 feet = 1 mile) 

0.8 miles

300

Convert 50 meters per second to miles per hour. 

(1 mile = 1600 meters)

112.5 mph