you invested a total of $30,000 at 3% and 4 1/2% simple interest. during one year, the two accounts earned $1200. how much did you invest in each account?

it is probably the graph on the bottom right.

- 70

this is the answer for you hope it

- "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."

i would you but i don't under stand the qustion

step-by-step explanation: