Brandon has a stack of books on his desk. the first book has 10 pages. the second book has twice as many pages. the third book has 40 pages, which is twice as many as the second book. if the patter goes on how many pages will be in the 8 book

1280 pages

Step-by-step explanation:

You simply continue the pattern

40 × 2

80 × 2

160 × 2

320 × 2

640 × 2

= 1280

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

a is the right answer