A set of numbers consists of four elements: 1,2,3, and 4. Which of the following is an appropriate use of set notation to
define this set?
A s= {2,4,1,3}
B. Set = {1,2,3,4}
C. S= (1,2,3,4)
D. S= {1}. {2},{3},{4}

step-by-step explanation:

b and c

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

answer: #1 ads up by 8 and i don't know #2