The diagram shows the scores in seconds of a skater's first three trials in a speed skating event. what is the maximum time she can score in her last trial so that her average time on all four trials is under 36 seconds
what do you need to find an average?
what inequality can you use to model the situation?

"if it is my birthday, then it is snowing"

the answer is c. 23/3

homozygous. one is homozygous, while two is heterozygous.

- "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."