David performed the following mathematical operation: 2x+3
x+3)2x2 +9x+9
He was left with a remainder of zero. Which of the following statements must
be true?

its a straight line parallel to the time axis

- "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."

35x 3= 105

step-by-step explanation:

35+35= 70   70 + 35= 105

9x