Jim visits the barber every 27 days. Ralph visits the barber every 9 days. Pete visits the barber every 18 days. If all three visit the barber on the same day, in how many days will they all visit the barber on the same day again?

They would get a haircut on the same day in 72 days.

Step-by-step explanation:

Use least common multiple

3 l     9 /  24 / 12

4 l     3 /   8 /  4

        3  /  2  /  1

LCM: 3*4*3*2*1 = 72

24

step-by-step explanation:

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2