Answer:
enjambement
Explanation:
Enjambement is the continuation of a sentence without a pause beyond the end of a line, couplet, or stanza.
Personally I would start with a quick warm up. Next, try paced run maxing out at 6:25's for a minute, then dropping back to 7:00 pace for 5 minutes before repeating.
Replace r with 1.2....you'll get 6(1.2)+7....multiply the 6×1.2=7.2 then add 7
7.2+7=14.2