Precalculus 12 grade

Question

Given the three functions below, which expression equals (b o v o k) (x) ?

b(x)=IxI+7, k(x)=2^x, v(x)=9x

Answer 1

Hi there!

An open circle indicates a composite function (a function in a function); in other words the expression could be written as such: b(v(k(x))).

so k(x) goes inside of v(x): 9(2^x)

and lastly, 9(2^x) goes inside b(x): |9(2^x)|+7

*Notice you work from the inside out. Sort of think of it as "doing what's in the parenthesis first".

I hope this helps!