Me garcia is at an elevation of 141 feet above sea level. if he drops down 158 feet what is his new elevation

-17 feet below sea level

Step-by-step explanation:

Garcia is at an elevation of 141 feet, and drops 158 feet. Subtracting 141 from 158 gets 17, therefore the answer is -17. A more straightway option to do this is 141 - 158 which gives you the answer.

- "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."

the answer is b