Final answer:
Francesca walked with a speed of 101.2 yards per minute by walking a total distance of 708.4 yards in 7 minutes.
Step-by-step explanation:
To determine how fast Francesca walked, we need to calculate the distance she walked and then divide it by the time it took.
First, we calculate the total distance Francesca walked:
Total distance = Number of laps × Distance per lap
Total distance = 1.61 laps × 440 yards/lap
Total distance = 708.4 yards
Now we calculate the walking speed:
Walking speed = Total distance ÷ Time
Walking speed = 708.4 yards ÷ 7 minutes
Walking speed = 101.2 yards per minute
Therefore, the correct answer is:
D. 101.2 yards per minute