Question

Solve log2 16 – x = 7

Answer 1

Is it 16 or is it (16-x)?

Answer 2

16-x

Answer 3

Solve log2 16 – x = 7

log2 (16 - x) = log2 (128)
16-x=128
x = -112

x=-3

Answer 4

Okay...then it's \[2^{7}=16-x\]

Answer 5

128 = 16 - x

x = -112

Answer 6

\[\log_{2}(16-x) =7\]?? Right?

Answer 7

I am not understanding how the answer can b -3

Answer 8

Yes

Answer 9

\[\log_{2}16-x=7 \]

Answer 10

1st one or 2nd one?

Answer 11

2nd

Answer 12

If it's the 2nd (more likely) option then yes, it is -3.

Answer 13

x = -112

Answer 14

Corey how are you getting -3

Answer 15

Here are the steps:

Answer 16

I didn't solve for x at the end because it's simple algebra...but...

x + 7 = 4
-7 -7
____________
x = -3

Answer 17

Hope the image helped somewhat.

Answer 18

Fantastic!
Thank you

Answer 19

Not a problem!

Answer 20

http://www.wolframalpha.com/input/?i=solve+log2+%2816+-+x%29+%3D+7

Answer 21

Don't forget to mark a Best Response. Take care.