Pll will the measure of angle 1 is (10x+8) and the measure of angle 3 is (12x-10). what is the measure of angle 2 in degrees?

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

How to do this , and can some one explain

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