What type of transformation is shown

Which of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212