Yes you are an amazing person
I think the answer would be introducing new information to the speeches closing lines.
Answer:
f(x) = d/ dx (2.5x1.3)
f(x) =2.5×d/dx(1.3*)
f(x) =5xIn 13/10 x 13*/2×10*
So the answer is
f(x)=5•IN13/10•13*/2•10*
That's the correct answer I see in my book
C. If everyone thinks the price is too high you should lower it.