Me im question 1: simplify the following expression: (7x + y) − (5x + 2y). if the final answer is written in the form ax + by, what is the value of b? question 2: simplify the following expression: (8x + 5y) − (2x − 3y). if the final answer is written in the form ax + by, what is the value of b?

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