1.
write this expression in standard form: 6.7 x 107107

670.007

67,000,000

670,000
2.
write this expression in standard form: 2.45 x 104104

24.5

24,500

2450
3.
simplify the following expression: 22⋅22=22⋅22=

32

4

16
4.
simplify the expression: b−2⋅b4⋅b=b-2⋅b4⋅b=

b3b3

b−8b-8

b
5.
simplify the expression: c−2⋅c7c-2⋅c7 =

c9c9

c5c5

c−14c-14