Nancy bought an energy drink for $4 along with some candy bars that cost $3.50 each. She spent $21.50. How many candy bars did Nancy buy?

stops on an even number.

- "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."

mean, 40.6

step-by-step explanation:

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative