Calculate the profit or loss of a dentist who collected $53,000 in fees and had the following expenses: salaries (2 nurses and a secretary) $32,000 rent $7,500 supplies $3,500 miscellaneous $2,750 profit (or loss)

answer: median

step-by-step explanation:

the median is the middle value when a data set is ordered from least to greatest

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."