Final answer:
The equation for the number of steps taken by Clare is: Steps = (2.5 - 4) * Time
Step-by-step explanation:
To find the equation for the number of steps taken by Clare, we can use the information given.
We know that she counted 20 steps in 10 seconds, and we also know that the typical number of steps per minute is between 100 and 150.
We can use this information to calculate the average number of steps taken per second by Clare.
Steps per second = Steps per minute / 60 = (100 + 150) / 60 = 2.5 - 4
So, the equation for the number of steps taken by Clare is:
Steps = (2.5 - 4) * Time