Answer: 45,000.
Step-by-step explanation:
The equation of inverse variation is given by:-

, where k is the constant of proportionality.
Given: After owning the car for 3 years, its value is $15,000. After owning the car for 5 years, its value is $9,000.
Here,

Then, 
or
[answer is same in both cases.]
Hence, the constant of proportionality in this inverse variation is 45,000.
Answer:
D. 2.75P
Step-by-step explanation:
275%=275/100=2.75
when we are finding the percentage of something, we multiply its decimal form by P (or whatever number you are trying to find the percentage of for example .8 time 100= 80)
275% of P= 2.75P
2019-2=2017
Since 9 is the ones digit 9-2=7
Answer: root of 18
9+9=x^2
18=x^2
x = 3 root of 2 or root of 18