BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Exponents

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Master | Next Rank: 500 Posts
Posts: 258
Joined: Thu Aug 07, 2008 5:32 am
Thanked: 16 times

Re: Exponents

by x2suresh » Mon Feb 23, 2009 2:27 pm
relaxin99 wrote:2^x - 2^ (x-2) = 3(2^13), what is the value of x?

9
11
13
15
17
2^x - 2^ (x-2) = 3(2^13)

2^(x-2) (2^2-1) =3* 2^13

2^(x-2) *3 = 3* 2^13

x-2=13 --> x=15
Top
Senior | Next Rank: 100 Posts
Posts: 73
Joined: Tue Sep 16, 2008 4:33 pm
Thanked: 2 times

by relaxin99 » Mon Feb 23, 2009 2:57 pm
Great explanation, exponents are my weakness for sure
Top
Post new topic Post Reply
• Page 1 of 1