Is this a question or a comment? Sorry I'm confuse...
ANSWER
After 7 years the car will worth, 7,759.5
EXPLANATION
The initial value of the car is 37000.
The rate of depreciation is 20%
In 7 years time, we can calculate the value of the car using the formula,

We substitute the values into the formula to obtain,



to the nearest tenth
Your answer is:
(125 - 8x^3) / (25 + 10x + 4x^2) = - ((2x - 5) * (4x^2 + 10x + 25)) / (4x^2 + 10x + 25) = - (2x - 5) = - 2x + 5
The correct result would be - 2x + 5.
X+2 < 7
Subtract both sides by 2
x < 5
Any value where x was less than 5 would be correct.
The answer is D: to dilate the triangle by a scale factor of 1:2 (or 1/2).
I hope this Helps!