Please help consider the functions

Find the multiplicative inverse of 8-12i

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form

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