Question

After one week a music downloading site sold over 80,000 songs. After 4 weeks the music downloading site sold over 300,000 songs. Find the average rate of change of songs per week.

Answer 1

rate of change=change in value/change in time

Answer 2

300000-80000=220000
220000/4=55000

Answer 3

Using Hang's method

the 2 ordered pairs ar (1, 80000) and (4, 300000)

so the average change is (300000 - 80000)/(4 -1)

Answer 4

I got the same Answer wat @hang254 said

Answer 5

sweet :)

Answer 6

but but but but its wrong @hang254

Answer 7

sorry

Answer 8

it maybe 220000/3 or just 300000/4

Answer 9

for me.... I'd say 300000/4