Final answer:
To find the minimum possible weight of Frank's dog, an equation is set up based on the relationship between the dogs' weights, leading to the solution of 8 pounds.
Step-by-step explanation:
The question asks to determine the minimum possible weight of Frank's dog based on the given relationship between the dogs' weights. Since Karen's dog weighs 15 pounds and Cam's dog weighs 1.5 pounds less than double Frank’s dog, we can set up an equation.
Let F represent the weight of Frank's dog. Thus, the equation will be: 15 = 2F - 1.5. Solving this equation, we add 1.5 to both sides to get 16.5 = 2F, and then divide by 2 to get F = 8.25.
Since we want the minimum whole number weight that is possible, the answer would be rounded down to 8 pounds, making D the correct answer.