Final answer:
The blue shark would take 2.25 hours to travel 90 miles at a speed of 40 mph.
Step-by-step explanation:
To calculate the time it would take for the blue shark to travel 90 miles at a speed of 40 mph, we can use the formula time = distance / speed.
Let's substitute the values into the formula:
time = 90 miles / 40 mph
time = 2.25 hours
Therefore, it would take the shark 2.25 hours to travel 90 miles at a speed of 40 mph.