Which of the following sequences is an arithmetic sequence?
a. {1,4,16,48,…}
b. {−10,5,−2.5,1.25,…}
c. {100,20,4,0.8,…}
d. {−10,−3.5,3,9.5,…}

Someone answer asap for ! 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