Final answer:
The function that represents the number of seconds, s, in d days is f(d) = d × 24 × 60 × 60.
Step-by-step explanation:
To represent the number of seconds, s, in d days, we can use the function f(d) = d × 24 × 60 × 60. This function multiplies the number of days by the number of hours in a day (24), the number of minutes in an hour (60), and the number of seconds in a minute (60) to get the total number of seconds. For example, if we plug in d = 2, we get f(2) = 2 × 24 × 60 × 60 = 172,800 seconds.