Plumbing service charges $35 per hour plus a $25 travel charge for a service call. good guys plumbing repair charges $40 per hour for a service call with no travel charge. how many hours must a service call be for the two companies to charge the same amount?

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