Question

Consider the functions f(x)=x^2-13and g(x)=x+5. what is the value of f[g(-4)] ?

Answer 1

first find g(-4):

`g(-4)=x+5=-4+5=1`

then, f (g(-4)):

`f(g(-4))=f(1)`

therefore

`f(1)=x^2-13=1^2-13=1-13=-12`

answer: - 12