What is the coefficient of the variable in the expression 2-5x-4+8?

∆red ≅ ∆ by rule will give brainiest if possible

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

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55