Which of these situations can be modeled with a linear function? A.
A puppy weighs 8 ounces when it is born. For the first 3 months, its weight increases by 10% each week.

B.
Emily takes her dog to obedience class. The first week, the dog is corrected 36 times; the second week, 16 times; and the third week, 6 times.

C.
A bag of dog food costs $9.95. It goes on sale at a discount of 25% for 2 weeks, then the price goes back to normal.

D.
Jon walks his dog 2 miles to a park. He walks at a constant speed of 2.5 miles per hour.