18. The amount of money is Marie's college fund account is given by(t) = 100 (1.04)'. where 4(t) is in thousands of dollars and 1 is Maie's age in years. Estimate the rate at which the amount in Marie's account is changing when Marie is 18 years old.

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