Look at the picture and answer, Please show work as well

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1

About 9% of th population is hopelessly romantic. if 2 people are randomly selected from the population, what is the probability that at least 1 person is hopelessly romantic?