Did I set this right ? Advance Algebra With Financial APP
Rebecca deposited $5,338.18 into a savings account with an interest rate of 5.9% compounded twice a year. About how long will it take for the account to be worth $10,000?

15 years, 11 months

32 years, 5 months

10 years, 10 months

11 years, 0 months
http://www.wolframalpha.com/input/?i=5%2C338.15%3D10%2C000%281%2B%280.059%29%2F%282%29%292t

Question

Did I set this right ? Advance Algebra With Financial APP
Rebecca deposited $5,338.18 into a savings account with an interest rate of 5.9% compounded twice a year. About how long will it take for the account to be worth $10,000?

 15 years, 11 months

 32 years, 5 months

 10 years, 10 months

 11 years, 0 months
http://www.wolframalpha.com/input/?i=5%2C338.15%3D10%2C000%281%2B%280.059%29%2F%282%29%292t

cwrw238 · Answer

you have not got the correct formula
correct is

10000 = 5338.18( 1 + (0.059/2))^(2t)

solve this for t

cwrw238 · Answer

checkout http://www.wolframalpha.com/input/?i=10000+%3D+5338.18%281+%2B+0.059%2F2%29%5E%282t%29