What is the subset of {0}?

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

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with