Answer:
1.
Statement: m∠A + m∠B + m∠C = <u>180°</u>
Reason: <u>Sum of Angles in a Triangle</u>
2.
Statement: 28° + x - 4° + <u>2x</u> = 180°
Reason: Substitution
3.
Statement: x = <u>52°</u>
Reason: Algebra
6x is an example of a variable
Plug g(x) in for every x in f(x) then substitute 4, you’ll get (f o g)(4) = 34
Answer:
3
Step-by-step explanation:
0•0=0
0+3=3