Let H(x)=F(G(x)) and J(x)=F(x)/G(x).

Question

Suppose
F(7)=4, F′(7)=−8
G(7)=3, G′(7)=−5
G(2)=7, G′(2)=−2

then
H′(2)=
J′(7)=

Answer 1

h' = df/dg * dg/dx

at x = 2
dg/dx = -2 and g = 7
df/dg at g = 7 = -8
so
-8 * -2 = + 16

that is how, you do the next

Answer 2

Thank you Damon! :)