Use a sample n=1400 , p=0.20 and a 99% confidence level to construct a confidence interval estimate of the population proportion, p

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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)

Can someone answer this question? : )