Melody

There is no maximum .. the minumum is 10.

except.... if you had to answer properly you have to write in words,

There is no x in the question. It is the vertical change in height that you have found.

Yes, once again that is excellent.  You have laid it out nicely too :)

post your answer and I, or someone else, will check it for you.  :)

Really, it looks good on mine, maybe your screen is smaller???

Anyway, the angle of elevation is from the horizontal looking up.  :)

And and angle of depression is from the horizontal looking down.

     d for down

     d for depression. 

Can you take it from here?

I copied this from the mathsisfun site

What is the problem? Do you know how to sketch it?

will do :)

Thanks EP,

I will check your answer Jenny.

I think this is your question. It is hard to read.

\(f(x)=\frac{8}{1+3e^{-0.7x}}\\ f(-1)=\frac{8}{1+3e^{0.7}}\\\)

8/(1+3*e^0.7) = 1.1361605924567683 = 1.14   (to 2 decimal places or 3 significant figures)

So Congratulations Jenny, you got it right :)