Question

Which function could produce the graph shown below?
Here's a picture of the graph http://media.apexlearning.com/Images/200706/07/88aefa1f-e452-40ed-bc02-d75eed124de7.jpg

A. http://media.apexlearning.com/Math/200706/06/dabba82b-dff6-4345-a192-d1e137bc3d39.gif

B. http://media.apexlearning.com/Math/200706/06/e4cd55fb-4c1f-4ee1-969c-6a8349a4b073.gif

C. http://media.apexlearning.com/Math/200706/06/4954b76c-66ad-4516-9871-16a8eb259100.gif

D. http://media.apexlearning.com/Math/200706/06/93013458-9f7b-4749-867a-40e7fa3e6472.gif

Help please?

Answer 1

C is actually http://media.apexlearning.com/Math/200706/06/4954b76c-66ad-4516-9871-16a8eb259100.gif

Answer 2

Input x=10 into each equation. Which one gives you a value closer to 6

Answer 3

hopefully you can see the picture

Answer 4

@zepdrix

Answer 5

Ya I like his idea :)
Just plug in some values, see which ones gets you close to the graph.

Answer 6

how do i plug them in?

Answer 7

\[\large\rm A.~~ f(10)=4e^{-0.5\cdot10}\approx0.027\]

Answer 8

You're replacing x with some value, let's say x=10,
and using your calculator to calculate.

Does A seem correct to you?
Does it look like the function passes through the point (10, 0.027) ?

Answer 9

so the answer is A?