Henry washes his dad's car every week for his allowance money. On Saturday he started washing his dad's car at 2:15 in the afternoon. If he is finished washing the car at 3:45 in the afternoon, how long did it take him to wash his dad's car? A) 1 hour and 15 minutes
B) 45 minutes
C) 1 hour 30 minutes
D) 30 minutes

what is all that apply?

h df tyjgtyj ttd y ytkgfty ty

step-by-step explanation:

tyty jry j y yj yttj yhgtyj y ghyj ytthj

- "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."