One pack 30 pencils is 7.97 and the other pack of 12 pencils is 4.77 which is the better buy? and why?

The price of a pencil in a pack of 30 pencils
7.79/30
The price of one pencil in that pack is about 0.266

The price of a pencil in a pack of 12 pencils
4.77/12
The price of one pencil in that pack : 0.3975

0.266>0.3975
One pack of 30 pencils is cheaper

hi there!

first we need to find out how much they are adding to each number to make the next number.

ex: 4 + 4 = 8, 8 + 8 = 16, and so on.

so continuing with 32,

32 + 32 = 64

64 + 64 = 128

128 + 128 = 256

256 + 256 = 512

4, 8, 16, 32, 64, 128, 256, 512

the 8th term of the sequence will be 512

hope this ! ~