Question

function s(d) gives store sales in thousands of dollars d days after opening. what does s(10) = 25 mean?
options:

• es are 25 thousand after 10 days.
• sales have been 10 thousand for 25 days.
• sales are 10 thousand after 25 days.
• sales are 25 thousand after 10 weeks.

Explanation:

The function \( s(d) \) represents store sales (in thousands of dollars) \( d \) days after opening. For \( s(10) = 25 \), the input \( d = 10 \) means 10 days after opening, and the output \( 25 \) means sales are 25 thousand dollars. So it means sales are 25 thousand after 10 days. The other options misinterpret the input (days) and output (sales) or the time unit (e.g., 10 weeks instead of days).

Answer:

A. Sales are 25 thousand after 10 days.