In october 2005, a family's gasoline consumption is 30 gallons per month and is increasing at a rate of 2.5 gallons per month. the price of gasoline is 260 cents per gallon and is increasing at a rate of 25 cents per month. calculate the rate at which the family's monthly gasoline bill is increasing at this time.

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