Question

After 1 minute, a file is downloading from the internet is at 0 kilobytes downloaded. After 2 minutes, the file is at 7 kilobytes downloaded. After 3 minutes, the file is at 26 kilobytes downloaded. After 4 minutes, the file is at 63 kilobytes downloaded. Write an expression to model the amount of the file downloaded

Answer 1

m = number of minutes
y = number of kilobytes downloaded

y = m^3 - 1
Try it out.

2 minutes = (2^3) - 1
At 2 minutes, 7 kilobytes is downloaded. It works for 3 minutes and 4 minutes too.

Reasoning? I just looked at the numbers and noticed it must be some kind of exponential function (it's increasing at a huge rate!)

Answer 2

Thank you!

Answer 3

your welcome

Answer 4

quick question. where did the root3 and -1 come from?