will medal please help!
Tiffany has been dieting for 6 months. After 1 month Tiffany lost a total of 8 pounds. After 6 months, she lost a total of 25 pounds. Find the average rate of change of pounds per month for the last 5 months

Question

will medal please help! 
Tiffany has been dieting for 6 months. After 1 month Tiffany lost a total of 8 pounds. After 6 months, she lost a total of 25 pounds. Find the average rate of change of pounds per month for the last 5 months

anonymous · Answer

4.16

anonymous · Answer

it said that that was not the correct answer how did you get that? @Bhawaish

anonymous · Answer

i have just 25/6 to get the average of each mont then * by 5 to get the sum and after divide by 5

anonymous · Answer

what i did was plot each point (1,8) and (6,25) and the slope i got was 3.4 do you think that would be a better way or no? @Bhawaish

anonymous · Answer

its is not a better way to get the correct answer.