Question

Which equation represents exponential growth and has a vertical stretch of 2?
A. y = 2(3x)
B. y = 3(.11)x
C. y = 2(1/2)x
D. y = x(1/6)2

Answer 1

Can you send a screenshot? I think you misquoted it, because right now the equations look suspicious for the kind of question you're asking.

Answer 2

how do I send a screenshot? I cant paste it into open study.

Answer 3

.....I would suggest Gyazo, but how about using the equation function to copy the qeuestion exactly?

Answer 4

I apologize that I am so stupid right now but how do I do that? Because what I did was just copy and paste the question from my school website (I do online school).

Answer 5

Take a screenshot, save in paint and attach it to the open study.

Answer 6

there I attached it

Answer 7

Oh yesssss.

Lets eliminate the answers one at a time. First we start with a definition of exponential growth. Accelerating growth. Now we look at the answers. We can easily remove D because it can be written down as y=kx, nothing exponential here, it's linear with a high start.

So for A, B and C, B and C are eliminated because the number attached to the x is less than one, it may seem counter-intuitive, but that doesn't cause exponential growth leaving A.

Now why don't B and C have exponential growth?\[\frac{ 1 }{ 2 }\times \frac{ 1 }{ 2 } \] can be written as \[\frac{ 1 }{ 2 }^{2}\]

Which gets
\[\frac{ 1 }{ 4}\]

A smaller number, so yeah. A is answer.

Answer 8

Thank you for the help I think I gave you a medal by clicking best answer.