Answer:
10
Step-by-step explanation:
Answer: whats the question?
Step-by-step explanation:
Answer: The store must sell 40 bikes.
Step-by-step explanation:
y=60x+2400
y=120x
120x=60x+2400
-60x on both sides
60x=2400
divide 60 on both sides
2400/60=40
x=40
Answer:
X=-3 y=-8
Step-by-step explanation:

Put the second one in first


Answer:
D. stratosphere
Step-by-step explanation:
The stratosphere contains atmospheric ozone.