Question

In order for a pet to lose weight in a healthy manner, a veterinarian suggested an overweight large-breed dog lose 2 pounds per week. If the expression x – 2y represents this situation, what must be true about the value of y?

Answer 1

y represent the number of weeks

Explanation:

Given expression

x - 2y

The veterinarian suggested that the overweight large-breed lose 2 pounds of its weight per week .

Let

x = initial weight

The overweight large-breed lose 2 pounds per week .

After first week of the weight loss

( x - 2)

The weight loss after one week = x - 2

The weight lost after 2 weeks

x - 2(2)

The weight lost after 2 weeks = x - 2(2)

The weight lost after y weeks

x - 2(y)

Where y = number of weeks

x - 2y

The weight lost after y weeks = x - 2y

Therefore, y represent the number of weeks