One lap around a track is equal to one-fourth of a mile. a horse ran a distance of 9 laps in 2 minutes and 30 seconds. what was the horse’s average speed in miles per minute?

All per-unit concepts rely on ratios,meaning,to provide a type of measurement

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )