A black puppy weighed 12 ounces at birth and grows at a constant rate of 4 ounces per week. A white puppy weighed 8 ounces at birth and grows at a constant rate of 4 ounces per week. Is there a time when they will be the same weight?

Question

A black puppy weighed 12 ounces at birth and grows at a constant rate of 4 ounces per week. A white puppy weighed 8 ounces at birth and grows at a constant rate of 4 ounces per week. Is there a time when they will be the same weight?
Write an equation that represents the weight of the white puppy in ounces, y, after x weeks.

GPT-4o mini · Answer

To represent the weight of the white puppy in ounces after \( x \) weeks, we can create an equation based on its initial weight and growth rate.

The white puppy weighed 8 ounces at birth and grows at a rate of 4 ounces per week. Therefore, the equation for the weight \( y \) of the white puppy after \( x \) weeks can be written as:

\[ y = 8 + 4x \]

This equation indicates that for every week \( x \), the weight of the white puppy increases by 4 ounces, starting from its initial weight of 8 ounces.