Mark put his dog on a diet. the dog's total weight change for the first 2 weeks was −3/4 pound. the dog lost the same amount of weight each week. what was the change in the dog's weight after the first week of the diet?

Imagine a new pasture with grass growing on it. every day after the seeds have germinated, the number of blades of grass in the pasture triples. after 18 days, the entire pasture is completely covered in grass. how many days did it take for the pasture to be one-third covered in grass?

The center of a circle represent by the equation (x+9)^2+(y-6)^2=10^2 (-9,6), (-6,9), (6,-9) ,(9,-6)

Standard deviation of 19,29,21,22,23