Question

Tom invests $10,000 in a savings account that offers 3.5 percent interest, compounded continuously.

In 10 years Tom will have earned $ in interest, and in years the investment will double. (Use the rule of 70 where required.)

Answer 1

For the answer to the question above, I'm not sure if your question is incomplete or the data on your question is incomplete but I'll answer it anyway because some data are provided.

10,000(1+.035)^10
10,000(1.043)^10
10,000(1.41059876062)
=14,105.99

14,105.99/.035
=40, 3028.21
I still hope that this helps