Tina has been dieting for a total of 13 weeks. she lost 3 pounds on the first week of her diet, but gained back a pound on the second week. on each remaining week of her diet, she lost 2 pounds. how many pounds has tina lost in all?
a. 26 pounds
b. 24 pounds
c. 20 pounds
d. 22 pounds

She lost 3 pounds on the first week, then, the second week she gained back one pound. So in total she lost the first two weeks 2 pounds.

On each remaining week of her diet, she lost 2 pounds. So she lost 11x2 = 22. In total she lost 22pounds + 2pounds = 24 pounds,

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation: