I need help with a precalculus question

Question

When running a 100 meter race Alan reaches his maximum speed 6 seconds after the race started when he is 30 meters from the starting line. Alan runs at this max speed for the rest of the race. Alan is 65 meters from the starting line 11 seconds after the start of the race.

1.What is Alan's distance from the starting line 6+z6+z seconds after the race started?

2.What is Alan's distance from the starting line xx seconds after the race started (provided x≥6)?

(I already have the the max speed which is 7 meters per second)

Answer 1

max speed in 6 seconds at 30 meters from the starting line

maintains that speed the rest of the race, for the remaining 70 meters

distance from the starting line in x seconds = 30+7(x-6) where x>6

max speed = 7 meters per second

6+70/7 = 16 seconds to finish 100 meters

if he averaged 30/6 = 5 meters per second from 0 to 6 seconds

then his distance from the starting line = 5z where z < 6