Anna opens two savings accounts at the beginning of a year. She deposits
$5,000 in an account that earns
2% interest each year. She deposits
$10,000 in a second account that earns
2.5% interest each year. If she makes no
withdrawals or deposits, what will be
the sum of the interest she earns from
her first account (a) and second account
(b) by the end of the year?
2
b 2.5
100
100
a
II
a =
b=
combined (a + b) =

a=100 b=250, 100+250=350

Step-by-step explanation:

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

- "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."