Which best describes what is happening in section b ?

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Josephine has a great garden with and area of 2x2 + x - 6 square feet

Which choice represents the sample space ,s for this event