Answer: 
<u>Step-by-step explanation:</u>

Answer:
$245
Step-by-step explanation:
350× 0.30 = 105 dollars off
350-105 = 245
Answer:
30000-2000=28000 feet.
This is a form of subtraction to use the ground and descend to ground level.
Step-by-step explanation:
Answer:
-3
Step-by-step explanation:
Let x equal the mystery number
Our equation will be:
x - 5 = 1 + 3x
Subtract x from both sides
-5 = 1 + 2x
Subtract 1 from both sides
-6 = 2x
Divide both sides by 2
-3 = x