3449995000 is what I got, I did 3.45x10^9 and then used that number and subtracted the answer from 0.5x10^4 to get the final answer, if that makes any sense.
Complete Question:
Solve the equation for x

Answer:

Step-by-step explanation:
Given

Required
Solve for x

Add 7 to both sides



Hence:
For
, 
Answer:
A) 840 Miles
B) 14 Milers per Gallon
Step-by-step explanation:
A) 350/24 = 14 miles per gallon
14 X 60 = 840 miles.
B) 350/24 = 14 miles per gallon
Answer:
he could do 6 row of 4, 8 rows of 3, 12 rows of 2
Step-by-step explanation:
15+9=24
6*4=24
8*3=24
12*2=24
Your answer would be 3:1
hoped this helped