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anonymous
 one year ago
Tina lost 3 pounds on the first week of her diet. She gained a pound on the second week, and then lost 2 pounds a week during every week afterwards. She has been dieting for a total of 13 weeks. How many pounds has Tina lost in all?
A. 26 pounds
B. 20 pounds
C. 24 pounds
D. 22 pounds
anonymous
 one year ago
Tina lost 3 pounds on the first week of her diet. She gained a pound on the second week, and then lost 2 pounds a week during every week afterwards. She has been dieting for a total of 13 weeks. How many pounds has Tina lost in all? A. 26 pounds B. 20 pounds C. 24 pounds D. 22 pounds

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kittiwitti1
 one year ago
Best ResponseYou've already chosen the best response.1lost 3 pounds: 3 gained 1 pound: +1 lost 2 pounds every week after: 2n (n is the consecutive weeks) Thirteen weeks minus two weeks is eleven weeks. So n is 11. Equation:\[3+12n\rightarrow3+12(11)=?\]

kittiwitti1
 one year ago
Best ResponseYou've already chosen the best response.1Are you still lost?

kittiwitti1
 one year ago
Best ResponseYou've already chosen the best response.1Where are you confused?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i suck at math so all of it and i doing at home school so i don't really have a teacher to help me or teach me how to do any of this

kittiwitti1
 one year ago
Best ResponseYou've already chosen the best response.11st week: lost 3 pounds. Lost means subtract, 3. 2nd week. gained 1 pound. Gain means add, +1 the other weeks: lost 2 pounds each. Lost means subtract. Since the first two weeks are of a different weight gain/loss, we subtract the first two weeks from the total 13 weeks and get 11 weeks, 132=11 weeks. So basically\[\text{week one}3,\text{week two}+1\]\[\text{the remaining weeks}132=11\text{ weeks}\rightarrow2n\text{with n being # of weeks}\]\[\text{since n is 11, }2n=2(11)\rightarrow\text{add it all up and }3+12(11)\]

kittiwitti1
 one year ago
Best ResponseYou've already chosen the best response.1Maybe my explanation was confusing. But the equation you get to find the answer is 3+12(11)

kittiwitti1
 one year ago
Best ResponseYou've already chosen the best response.1\[3+12(11)=3+122=25+1=24\]You got it right, except it was negative. :]
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