Answer:
d = 6t
Time required will be 3 hours.
Step-by-step explanation:
Lakelyn can swim at a rate of 250 yards every 5 minutes. She can run 6 miles an hour and bike 12 miles an hour.
Therefore, her running speed is 6 miles per hour.
Therefore, the function that models the running distance (d) in miles and the time span of running (t) in hours is given by
d = 6t ............. (1)
Using the above equation we can calculate the time required by her to run 18 miles.
So, 18 = 6t
⇒ t = 3 hours. (Answer)