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) ?

This is the average number of days the house stayed on the market before being sold for $150,000.

The house sold on the market for $150,000 and stayed on the market for an average of 150 days before being sold.

The house sold for $150,000.

The house stayed on the market for an average of 150 days before being sold.

The correct answer is:

This is the average number of days the house stayed on the market before being sold for $150,000.

Explanation:

f (p) is defined as the average number of days a house stays on the market before being sold for price p (given in $1000).

We want f (150); this means p=150. Since p is in thousands of dollars, this means the price of the house was $150,000.

This means f (150) is the average number of days the house stayed on the market before being sold for $150,000.