Answer:
$4x
Step-by-step explanation:
If she charges $16 up front then she earned $4 per hour.
It's really hard to tell for anyone who can't see the table.
Sadly, you've left ALL of us in that awkward status.
Answer: x = 12, y = -8
Step-by-step explanation:
If you do substitution:
4(-y+4) + 6y = 0
-4y + 16 + 6y = 0
2y + 16 = 0
2y = -16
y = -8
x = -(-8) + 4
x = 8 + 4
x = 12