Unit 6 Test

6.1

100

x decreased 7 is 31

x-7=31

200

the product of 3 and y is 12

3y=12

300

the difference of 9 and f is 13

9-f=13

400

3 increased by p is 41

3+p=41

500

the quotient of 13 and and w is 18

13/w=18

6.2

100

r+2=6

r=4

200

9-n=4

n=5

300

t-61=123

t=184

400

r+12-4=17

r=9

500

w+13-2+5=29

13

6.3

100

56/w=8

w=7

200

4t=24

t=6

300

q/12=9

q=108

400

x(2/4)=5

x=10

500

k(2/3)=14

k=21

6.4

100

7x+y=28 ; (3,6)

False

200

4x+5y=45 ; (5,5)

True

300

7x+3y=47 ; (4,5) (3,5) (5,4)

Which ordered pair makes the equation true 

(5,4)

400

x−4y=6 ; (?,3)

What is x?

x=18

500

8x-2y=12 ; (2,4) (3,2) (5,4) 

None

Pi

100

How many digits of Pi are there?

Infinite 

200

What is the 5th digit in Pi?

5

300

What is the 14th digit in Pi?

7

400

What is the 18th digit of Pi?

3

500

What is the 23rd digit of Pi?

6