Precision and significant digits
Exponents and expersions
Expressions
Equations in One variable
Equations and two variables

### 100

What is precision?

A is a level of detail of measurements

### 100

√ ̅

### 100

a=2 b=4 c=10

5a+2bc-c

8

### 100

Solve

8n-7=2n+5

8n-7=5

### 100

Is this ordered pair an answer to this equation

-5x+2y=4

(4,8)

yes

### 200

What are significant digits ?

A is one way to resolve the this dilemma

### 200

What expression contains a radical symbol?

a=2 b=2 c=-2

7a-5b+4

3

### 200

Solve

-4(3x-1)=10-4x

- 3/4=x

### 200

Write R first four terms de this sequence f(n)+2n(n+1)

4,12,24.40

### 300

What is the most precise measurements?

Millimeters or centimeters

### 300

What property of exponents would you use for 125 and two thirds

Power of a power property

### 300

3a+5b2+2a+4b2

5a+9b2

### 300

Solve

a(x+b)=c

solve for x

x=c/a-b

### 300

Solve this equation 1/3x -2y+7,(9,-2)

7=7

### 400

How many significant digits does 37.85 have?

4

### 400

A common speed at which adults roll bowling bals is 15mil/h 15mi/h is equivalent to now many feet per second?

22 feet per second

### 400

Write into an expression the sum of 5& a number times 7

(5+X)7

### 400

400-3x+5y=15

see if (8,1) is solution

Not a solution

### 400

Set these functions equal to each other

f(x)=2x+4

g(x)2x-8

x+3

### 500

A cyclist travels 105 kilometer m 4.2 hours. use dimensional analysis to convert the cyclists speed to miles per minute. Write your answer with the correct number of significant digits. Use 1mi= 1.61 km

A= x miles = 105 km *1mi     * 1hr

minutes   4.2hr    1.61km    60min

105mi =0.2588 mi/min

4.2.161

### 500

The appropriate number of calories C an animal needs each day is given by c=72n three fourths  where m is the animals mass in kilograms. How many calories does an 81 kilograms adult male need each day?

22 feet per second

### 500

Write into an expression

6 times a number plus 10 over 50

6x+10

50

62-1<-7(y-3)

-2y>y or y<-2

### 500

X      y       (x,y)

-2

0

1

3

5

x            y             x,y

-2           7            -2,7

0            5              0,5

1             4           1,4

3             2             3,2

5               0          5,0