I don't know what you mean by "Broken apart," but I'll do my best...
20 x 90 = 1800
9 x 7 = 63
1800 + 63 = 1863
I hope this helped you! :)
The answer could be 70a+21b
(1, -2, 1) is perpendicular/normal to the plane, and passes through the point (1, -2, 1), so its equation is

For how many years?
In any case I will give you the formula & you will plug into the number of years"
Remaining Value (or Salvage Value) = initial cost(1 - rate%)^n(number of years
Remaining value after n years = 15000(1-23%)^n
Answer:
Area of the truck tank is 1356.48
Step-by-step explanation:
did the math yesterday!! >_<