Question

PLEASE!!!!!!! ASAP (Medal+ Fan) I don't know how to approach the question (pic)

Answer 1

can somebody help

Answer 2

@HappySoul

Answer 3

from the consumption of 1990 subtract the consumption of 1960 -- say A
then divide that by 30 (time period in years from 1969 to 1990) ---say B

then divide A by B and see which answer it mnatches

Answer 4

@HappySoul I got 0.2586

Answer 5

you have done wrong calculations.....
(520-668) divided by 30 = -4.93

Answer 6

@HappySoul im having the same problem can you tell me what formula I need to use

Answer 7

@uri

Answer 8

for glass.....reading of 1980-reading of 1970 divided by the time period which is ten

Basically you have to use

change
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time period