-cost of sequencing a human genome in January 2004 was roughly $29 million

- cost of sequencing a human genome fell by roughly 15% every 6 months.

(a) write a function E(t) for the cost to sequence a human genome, in millions of dollars, t years after January 2004.

(b) Using just the information in the problem (and not the result to (a)), what is E(0)? What is E(0.5)? Check that the function from (a) agrees with this.

If this exponential trend had continued indefinitely, in what year would you expect the price of sequencing a human genome to fall below $1,000? Search for the exact solution & use a calculator to give a decimal approximation for this value