Step-by-step explanation:
Given that,
[tex]f(x)=-2x^{-3}\ ......(1)\\\\g(x)=-2x-3\ ......(2)[/tex]
Put x = -2 to find f(-2) in equation (1).
[tex]f(-2)=-2(-2)^{-3}\\\\=\dfrac{1}{4}[/tex]
Put x = 5 to find g(5) in equation (2).
So,
[tex]g(5)=-2(5)-3\\\\=-13[/tex]
Hence, f(-2) = 1/4 and g(5) = -13.
