Question

HEY! CAN YOU PLEASE HELP ME ASAP!!
solve for y: 2^(y-3)=1/16

Answer 1

PLEASE HELP!! I'm stuck :( and i'll fail!

Answer 2

Know how to convert 1/16 into 2^?

Answer 3

no :(

Answer 4

Well, what are the powers of 2?

Answer 5

its 2^(y-3)

Answer 6

2^0=1
2^1=2
2^2=4
and so on.

Answer 7

there are answer choices too: its 1. 1
2. 0
3. -1
4. -2
so whats the answer? please tell me!

Answer 8

We don't tell people answers here. We help them find them.

Any of the powers of 2 come up to 16?

Answer 9

yea, 2^4

Answer 10

Ok, so if 2^4=16, 2^?=1/16?

Answer 11

2^-4?

Answer 12

Exactly! Noe replace the right hand side of the original with that and see if it makes more sense.

Answer 13

oh! so the answer is -1?! since 2^(-1-3)=2^-4 which is 1/16?

Answer 14

Yes. That is how you do these. make the base match, then you can look at the exponents.