He can send 600 messages.
40+0.05x=70
-40+0.05x=70-40
0.05x=30
So divide 30 by 0.05
and you get 600.
Equation: 0.25x + 200
0.25x + 200 = 345
0.25x = 145
140/0.25 = 580 miles
Answer: 580 miles
We know that

Therefore

This verifies that Camile's method is justified.
Eighteen could be in standard form 18 or expanded form 10 + 8.
Answer:
growth
Step-by-step explanation: