Factor each expression
59. s^2-20s+100
61. r^2-64
63. 25m^2+80m+64
65. g^2-225
67. 36h^2-12h+1
69. 32v^2-8

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