Terry wrote four functions to represent the population growth or the population decline of various towns over the next few years

Can someone me and do the problem plz so i can understand it more better

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