Plz me
who answers in a min will be presented as a folllower on my utube channnel

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Math it's appreciated. (picture provided)

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