Question

the average price of a certain brand television dropped from $3000 in january to $2400 in sept. find the rate of change in the average of the televison. pleez help show work

Answer 1

so, in seven months, the price dropped by $600. correct?

Answer 2

thats what i thought..

Answer 3

right, so how much did it drop per month on average?

Answer 4

100?

Answer 5

how did you get 100?

Answer 6

do i divide the months by 600

Answer 7

you want to do 7 / 600? Why?

Answer 8

the total drop in price over 7 months was 600 dollars.
so, how much was the drop on average per month?

Answer 9

85

Answer 10

right. so the rate of change in price was -85 dollars per month

Answer 11

you put -85 because the price is reducing.

Answer 12

the rate of change means how fast the price is reducing over time.

Answer 13

january to sept IS 7 MONTHS?

Answer 14

jan to feb is 1 month
feb to march is 1 month
march to april is 1 month
april to may is 1 month
may to june is 1 month
june to july is 1 month
july to august is 1 month
august to september is 1 month


so the total number of months is 8, not 7. andrea, use 8 instead of 7 to get your answer.
thanks nancy, for pointing that out!