What is the m for this slope?

For the function, f(x) = -5x 2, find f(-4).

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

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