If an amount of $100 in a savings account increases by 10%, then increases by 10% again, is that the same as increasing by 20%? explain

no 120≠121

Step-by-step explanation:

no, this can be showed as the following-

10% of $100 is $10 we them add it to get $110

now another 10% increase, this time $110 gives an $11 increase

adding this together we get $121

20% of $100 is $20. we then add this together to get $120

120≠121

my answer is$ 12

step-by-step explanation:

because 15 -2=12

- "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."