Algebra 1 Final

Statistics

100

Find the mean of:

13,17,12,17,19,20,15,16

Mean=16.13

200

Find the range:

99,87,54,23,10,57,29,63,44,33

Range=89

300

Find the Mode:

30,29,45,32,36,29,45,50,28,45

Mode=45

400

Find the range:

30,57,42,28,29,29,35,40,46.55

Range= 29

500

Find the median:

10,12,14,16,20,21,24,25,26,29,30

Median=21

Linear Equations

100

Solve

r/8=25/40

r=5

200

Solve:

5x+5=3(5x-4)-10x

No solution

300

Solve the equation:

11x-4=29

X=3

400

Solve:

7(n-1)=-2(3+n)

H=1/9

500

Solve the equation:

c-22=54

c=16

Expressions and functions

100

Evaluate each expression if a=4,b=6,c=8

solve: 2a+(b²/3

20

200

Write an algebraic expression for:

10 less than a number f and 7

7f-10

300

Simplify expression 

17u+25u

42u

400

Evaluate each expression if a=4,b=6,c=8

solve: 8b-a

44

500

Write an algebraic expression for:

A number t more than 6

6+t or t+6

Factoring

100

Factor the quadratic:

x²+9x+20

(x+4) (x+5)

200

Prime or not

4x²-3x+5

Prime

300

Factor the quadratic:

x²-8x+12

(x-6)(x-2)

400

Factor polynomial 121-4b²

(11+26)(11-26)

500

Factor the polynomial 

81-c²

(9+c)(9-c)

Polynomial operations

100

is y=3x² a maximum or minimum?

Minimum

200

is y=3x²+6x-4 a maximum or minimum?

Minimum

300

is -2x²-4x+6 a maximum or minimum?

Maximum 

400

What is the axis of symmetry of:

y=3x²

x=0

500

What is the axis of symmetry of:

y=3x²+6x-4

x=-1