## rocal2 3 years ago I need help with Calculus please!!

1. rocal2

Why I can get it right once I plug the formula..?? e^0.016(ln3)/0.049 Thanks!!

2. experimentX

why not try plugin x=10 in D(x)

3. experimentX
4. experimentX

similarly plug x=12 in S(x)

5. rocal2

Ok, hold on let try.

6. rocal2

I got 2.96 and it is wrong, but I got the units rights. which is 22.42

7. rocal2

@Hero please help to solve the last part.. I would like to know what I am doing wrong. Thanks!

8. rocal2

Can you see the last part guys??

9. rocal2

10. experimentX

try putting x=22.42 units

11. rocal2

I already did it is good but the price per unit its my problem.

12. rocal2

@experimentX check the last attachment, so you can see what I need, Pleasee!!

13. experimentX

yeah I'm checking ... isn't 2.16 and 1.21 correct answer?

14. rocal2

Ohh Yes!! I realized after, I know how to do that part.

15. rocal2

it is only the last part why, when I plug the formula in my calculator I don't get it right.

16. rocal2

This one here :: e^0.016(ln3)/0.049

17. experimentX
18. experimentX
19. rocal2

I only have 3 attemp and the right was 1.43, there were similar to the one you gave me.. But I need to have an exact way to do it so..

20. rocal2

Should I plug in the whole unit like 22.42 and the formula like you gave me on the web site? and might give me the right answer..

21. experimentX