I NEED HELP WILL MEDAL PLEASE
Roni recently bought a car for $22,000. Her research shows the car will depreciate by an average of $1,500 per year. If x represents the number of years Roni owns the car, which of the following equations represents the value of the car after x years?
y = 22,000x - 1,500
y = 1,500x - 22,000
y = 22,000 + 1,500x
y = 22,000 - 1,500x

Question

I NEED HELP WILL MEDAL PLEASE
Roni recently bought a car for $22,000. Her research shows the car will depreciate by an average of $1,500 per year. If x represents the number of years Roni owns the car, which of the following equations represents the value of the car after x years?
y = 22,000x - 1,500
y = 1,500x - 22,000
y = 22,000 + 1,500x
y = 22,000 - 1,500x

tkhunny · Answer

Which one STARTS at 22000 and decreases by 1500 each year?

y = 22,000x - 1,500 -- For x = 0, y = -1500 -- No good.
y = 1,500x - 22,000 -- For x = 0, y = -22000 -- No good.
y = 22,000 + 1,500x -- For x = 0, y = 22000 -- Maybe.
y = 22,000 - 1,500x -- For x = 0, y = 22000 -- Maybe.

Okay, considering the starting value, we've ruled out two bas results.  Use the other information to rule out the last one.

anonymous · Answer

ok thanks

anonymous · Answer

So the last one is correct?

tkhunny · Answer

You tell me.  Does it meet ALL the criteria?

anonymous · Answer

i think so because if it is depreciating wouldnt it be subtracting?

tkhunny · Answer

Well, there you go.  No more doubting.  Move on to the next one.

anonymous · Answer

ok well my practice session just closed on me so the question is now irreverent but thanks for explaining to me better on how to do it