How to find the common difference of an arithmetic sequence?

Given f(x) = 2x^2- 5x+1, determine the function value f(2). do not f(x) = in your answer

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

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