Question 151123
"A man walks at a pace of 3 miles per hour. After 2 hours he stops for a rest"
__ so he walks 6 mi (3mph * 2hr) and then rests


"Let t be time AFTER the rest when he continues on his walk"
__ so after resting, he walks 3t mi (3mph * t) __ t is measured in hrs (not min or days, etc.)


d=6+3t