Luis has $100 in savings and adds $75 more each week. Daniel has $80 in savings and adds $80 more each week. a.) After how many weeks, will Luis and Daniel have saved the same amount?

b.) How much money will they have saved?

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

- "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."