Mike and Ryan are playing in a rectangular swimming pool. They are at opposite corners of the pool, as shown in the following illustration. The length of the swimming pool is 12 feet, and the width is

Mike and Ryan are playing in a rectangular swimming pool. They are at opposite corners of the pool, as shown in the following illustration. The length of the swimming pool is 12 feet, and the width is t feet less than the length. Which of the following equations can be used to calculate the values of t for which the distance between Mike and Ryan is 32 feet?