Question

I have been having major issues trying to figure this out...can someone please try and explain to me?

F(20) = 40e ^0.032(20) = ~ 75.9

Answer 1

What is it that is confusing you?

Answer 2

are you confused as to how the left hand side is equal to the right hand side?\[40e ^{0.032(20)} \approx 75.9\]

Answer 3

OK, I saw from your previous posting that you don't understand how the left hand side is equal to the right hand side.

Answer 4

Let me try and break it down into steps for you....

Answer 5

I don't understand how they come up with the answer

Answer 6

\[\begin{align}
40e^{0.032(20)}&=40*e^{0.032*20}\\
&=40*e^{0.64}\\
&=40*1.8965...\\
&=75.859...\\
&\approx75.9
\end{align}\]hope that helps...

Answer 7

so I ignore the f(20)?

Answer 8

My guess is that you were given a function of the form:\[f(x)=40e^{0.032x}\]and were asked to evaluate the function at \(x=20\) so that you would then get:\[f(20)=40e^{0.032(20)}\]

Answer 9

yes, now for e, I would use 2.718?

Answer 10

yes you have the correct approximate value for e.

Answer 11

now when I take 0.64*2.718, I get 1.7344

Answer 12

I just don't grasp it!

Answer 13

you made a mistake there.
it is not 2.718*0.64 but \(2.718^{0.64}\)

Answer 14

ohhhhhhhhhhhhhhhhhh

Answer 15

i.e. 2.718 to the power of 0.64

Answer 16

don't worry too much if you don't grasp things too quickly.
as long as you keep practicing, you will slowly begin to master this subject.

Answer 17

I still get the wrong answer

Answer 18

what do you get?

Answer 19

I think I got it now

Answer 20

:-)

Answer 21

thank you so much!

Answer 22

you are very welcome. I'm glad I could help you.