Me i dont understand at all. a store sells candy at $.50, $1, $1.50, $2, and $3 per kilogram. how many kilograms of each kind of candy does $3 buy?1. how many kg of candy at $.50 per kilogram could be bought. 2. how many kg of candy at $1 per kilogram could be bought. 3. how many kg of candy at $1.50 per kilogram could be bought. 4. how many kg of candy at $2 per kilogram could be bought. 5. how many kg of candy at $3 per kilogram could be bought.

the least common denominatore of 7 and 2 is 9

step-by-step explanation:

7+2=9

- "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."