A technician charges $25 per hour plus $50 for a house call to repair home computers, make a table and a graph to show the cost for 1, 2, 3 and 4 hours of home computer repair service. Is there a direct variation?

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