Answer:
set mary is x years old, and helen is y years old.
first sentence:x=2y
second one:4(y-8)=x+4
bring x=2y in 4(y-8)=x+4
=>4y-32=2y+4
=>2y=36
=>y=18
=>x=36
mary:36
helen:18
I think it’s C but I’m not too sure
Answer:
Third option:
and 
Step-by-step explanation:
Given:

For a modulus function, if
, then,

Here,
, 
∴ 
Therefore, the third option is the correct answer as the graph has
values as -2 and 2
Answer:
One solution
<em>BRAINLIEST, PLEASE!</em>
Step-by-step explanation:
2y - x = 6
2y = x + 6
y = x/2 + 3
y = 2x + 7
After graphing, they have one solution at (-2.667, 1.667).