Question

PLEASE HELP

Answer 1

Since it decreases by 10% we have to write 0.9. The correct answer is A because it is the only one with the principal of 24,000 and has a 0.9 decrease.

Part2:
you put 5 where the x is and you get 
$14,171.76

Answer 2

It will be A bc youre multiplying the total amount of the car by how much it is worth. If it is decreasing by 10% each year then it is worth 90% of its value, hence 0.9