What is the slope of a line containg the points (-2,5) and (1,-7)

6n^2-7n-75=0 solve by quadratic formula

If i have 20$ and i gave 5$ away how much i got

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