semester Exam

multi-step equations

100

c-20=4-3c

c=6

200

-4(-3n-8)=10n+20

n=-6

300

2(4-y)-3(y+3)=-11

y=2

400

-(-8-3x)=-2(1-x)+6x

2=x

500

3(3x-8)-5(3x-8)=4(x-2)-6(x-2)

x=3

compound inequalities

100

-7x-50<=-1 and -6x+70>-2

-7<=x<12

200

12x+7<-11 or 5x-8>40

x<-3/2 or x> 48/5

300

-18x+21>-15 or 20x-13>= 27

all values of x are solutions 

400

7x+39>=53 and 16x+15>31

x>1

500

4x-39>-43 and 8x+ 31<23

no solution

equation with variables on both sides

100

-3+5a=4a-10

a=-7

200

-2k=k-7-8

k=5

300

-16+3n=-8-5n

n=1

400

4n-1=6n+8-8n+15

n=4

500

1-3x=3x+1

x=0

functions

100

is it a function (3,16),(4,15),(6,16)

yes

200

is it a function (3,14),(10,9),( 3,16 )

noo

300

Is it a function (4,9),(5,9),(9,0)

yesssss

400

is it a function (6,9),(9,99),(12,34)

yea

500

Is it a function (45,45),(79,79),(999,999)

YEA!!!!

multi-step equations with distribution

100

5(x-6)=45

x=15

200

5(x+4)=25

x=1

300

3/4m-2(m-1)=1/4m+5

m=-2

400

4n-2n=4

n=2

500

-3(4r-8)=-36

r=5