The difference between a number and three is multiplied by negative six. the result is eighteen. what is the number? write an equation that can be used to find the number, n. solve the equation you wrote in part a to find the value of the number. include all of your work in your answer.

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