I have no idea.
Throughout much of the 20th century, the yearly consumption of electricity in the US increased exponentially at a continuous rate of 6% per year. Assume this trend continued and that the electrical energy consumed in 1900 was 1.5 million megawatt-hours.
(a) Write a formula for yearly energy consumption, C, in millions of megawatt-hours as a function of time, t, in years since 1900.
(b) Find the average yearly electrical consumption throughout the 20th century.
Exact: _______________. million megawatt-hours
Decimal (nearest hundreth): __________ million megawatt-hours
(c) During what year was electrical consumption the closest to the average for the century?
(d) Without doing the calculation for part (c), how could you have predicted which half of the century the answer would be in?