If $10,000 is invested at an interest rate of 3.5% each year, what is the value of the investment in 7 years? Write an exponential function and solve. a. y = 10,000 (1.035) negative 7;$7859.91 b. y = 10,000 (1.035) 7;$12,722.79 c. y = 10,000 (7) 1.035;$74,933.58 d. y = 10,000 (.35) 7;$64,339.30