Solve the system of equations 3r – 4s = 0 and 2r 5s = 23. a. r = 12, s = 0 b. r = 4, s = 3 c. r = –12, s = 9 d. r = –1, s = –3

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