Lakelyn is training for a triathlon. She is practicing her swimming, running, and biking skills. So far

, she can

swim at a rate of 250 yards every 5 minutes. She can run 6 miles an hour and bike 12 miles an hour.

Write an equation to show how long it will take Lakelyn to run 18 miles.

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)

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.