Let f(p) be the average number of days a house stays on the market before being sold for price p in $1,000s. Which statement best describes the meaning of f(150)?

f(150) represents the average number of days houses stay on the market before being sold for $150,000.
Houses sell on the market for an average of $150,000 and stay on the market an average of 150 days before being sold.
Houses sell for an average of $150,000.
f(150) indicates houses stay on the market an average of 150 days before being sold.

Question

Let f(p) be the average number of days a house stays on the market before being sold for price p in $1,000s. Which statement best describes the meaning of f(150)?

f(150) represents the average number of days houses stay on the market before being sold for $150,000.
 Houses sell on the market for an average of $150,000 and stay on the market an average of 150 days before being sold.
 Houses sell for an average of $150,000.
 f(150) indicates houses stay on the market an average of 150 days before being sold.