(18+4i)+(−11+23i)=left parenthesis, 18, plus, 4, i, right parenthesis, plus, left parenthesis, minus, 11, plus, 23, i, right parenthesis, equals Express your answer in the form (a+bi)(a+bi)left parenthesis, a, plus, b, i, right parenthesis.

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