Answer:
$20
Step-by-step explanation:
15/3=5 which means that for every guest attending Carla's retirement party it must cost her $5 each.
Therefore if 4 guests come to the party it must mean 4(5) which is 20.
Hence $20
Answer:
What expression?
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
False, it's always on the vertex of the parabola.