Algebra Demystified 2nd Ed

Chapter 2 IntroduCtIon to VarIables 61

deMYstiFied / algebra deMYstiFied / HuttenMuller / 000-0 / Chapter 2

Quiz

1. Write^1021 y as a product of a number and a variable.

a.^10

21

y

b.^10

21

+y

C.^21

10

+y^

d.^10

21

⋅^1

y

2. Write 128 x in lowest terms.

a.^2

3

x

b.^2

3

C.^1

2 x

d.^2

3 x

3. The width of a room is three-fourths its length. If x represent the length, in feet,
   what is its width?
   a.^34 feet

b.^3

4

−x feet

C.^3

4

x feet

d. x−^3

4

feet

4.^95 ⋅=^1021 x

a.^6

15

x

b. x

16

C.^3

7

x

d.^6

7

x