Composite function find m(k(x))

Question

Given: k(x) = 5x^2-2x and m(x) = 1/x-4 and p(x) = √x+7 and s(x) = 3x+c

Calculate the following

m(k(x)) = Answer

s°s°s(x) = Answer

Answer 1

Plug the k function (5x^2-2x) into the m function wherever you see an x into 1/x -4

if it is (1/x ) -4 {this means x is in the denominator}

(1/(5x^2-2x) ) -4

if it’s 1/(x-4) {this means x-4 is in the denominator}

1/ [(5x^2-2x) -4 ]

I hope this helps!