Complete question:
The leatherback sea turtle is the fastest known reptile, with a maximum speed of 21.92 miles per hour (mph).
Which of the following equations, where d is distance in miles and t is time in hours, represents a speed that is less than that of the leatherback sea turtle?
Select all that apply.
a. d = 2.192t
b. d = 20t
c. d = 22t
d. d = 30t
Answer:
a (2.192t) and b (20t)
Explanation:
Since units for distance and time are all measured in miles and hours respectively, we can simply compare the values of the options given with the leatherback turtle speed and express if the value is lower or not. We must pay special attention to the decimal separator in some cases.
Leatherback sea turtle: d = 21.92t
a. d = 2.192t is less than 21.92t
b. d = 20t is less than 21.92t
c. d = 22t is more than 21.92t
d. d = 30t is more than 21.92t