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SAT Math: Recognizing the Correct Exponential Graph to Express Cell Reproduction 1 Views
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Description:
Cells double in number every few hours. Which of the following graphs models the number of cells as a function of time?
Transcript
- 00:00
Yeah Whoa Okay Say T match members A short question
- 00:06
foryou Cells double in number every few hours Which of
- 00:09
the following graph models the number of cells as a
- 00:13
function of time Okay so if they double and they
- 00:18
keep doubling your expecting like a huge fast f sixteen
Full Transcript
- 00:23
flight upwards like straight up So it just looking at
- 00:25
a let doesn't make any sense I would mean like
- 00:28
they're the same amount No matter how much time like
- 00:30
time is long this XX is here meaning that they
- 00:33
just grow the same with time and be well that
- 00:36
just is a kind of flat There's nothing geometric going
- 00:39
on it What about the doubling thing And see Says
- 00:41
they just grow infinitely fast and well here's the that
- 00:44
looks about like the way in F sixteen takes off
- 00:47
Right So we gotta hand it to him Cells reproduce
- 00:49
quickly in order to keep the body going Since sells
- 00:51
consistently double in number while they form an exponential function
- 00:56
Don't believe us counted out One two four eight sixteen
- 00:59
thirty two sixty four Yeah Here's another way to express
- 01:01
that pattern It's two to zero to the one to
- 01:04
do the three and so on So we've been through
- 01:06
the others They're all straight lines It doesn't mean anything
- 01:08
if it can't reflect the geometric compounding here that defines
- 01:12
a curve Well good work sells You guys keep reproducing
- 01:15
and we'll keep solving math problems So yeah the answer 00:01:17.9 --> [endTime] is D right here That's a airplane taking off
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