Answer: 158.11
Step-by-step explanation:
I've attached the solution
I find it best to switch everything exponents when taking derivatives.
F(x) = 7/x
Same as..
F(x) = 7x^-1
Take derivative..
F'(x) = -7x^-2
Plug in x = 1
F'(1) = -7(1)^-2
F'(1) = -7
Using Pythagoras in the first question
c=

which is approximately 16.5
for the second question
we also use Pythagoras

Answer:
7,560
Step-by-step explanation:
70% of 1750 × 6 = 7,560
It would be A. R= 50 +10m