REALLY EASY AND BRAINLIEST 30 POINTS In order to be equivalent, the expressions must be equal when value of x is used. Please fill in the blank

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Teams of 4 are competing in a 1/4 mile relay race. each runner must run the same exact distance. what is the distance each teammate runs?

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