Jane Chang is making plans for a summer vacation. She will take $1000 with her in the form of traveler's checks. From the newspaper, she finds that if she purchases the checks by May 31, she will not have to pay a service charge. That is, she will obtain$1000worth of traveler's checks for $1000. But if she waits and buys the checks until just before starting her summer trip, she must pay a 1% service charge. (It will cost her $1010 for $1000 of traveler's checks.) Jane can obtain a 13% interest rate, compounded weekly, on her money. To help with her planning, Jane needs to know how many weeks after May 31 she can begin her trip and still justify buying the traveler's checks on May 31. She asks you to make the computations for her. What is the answer?