please don't use excel

1.

Given the following two sets of cash flows:

Option A: $8,786.51 in 4 years plus $13,424.64 in 7 years time.

Option B: $16,007.00 one year from today.

Which of these values for i⁽²⁶⁾ makes the present value of these two options the same?

2.

biyu has $135,000.00 in an investment account that pays 2.745% compounded weekly. How many weeks ago did she have $125,252.91 in her account? (Round your answer to the nearest integer - it should be very close to one!)