If you divide 105 days by 7 that's 15 weeks then you multiply 47 by 15 which is 705 then you multiply 65 by 15 which is 975 then you add 975 to 500 and subtract 705 which will give you 770
3rd party is someone who is not one of the main people involved in a business agreement or legal case
D) working with the Soviet Union to reduce the levels of nuclear weapons.
The answer is true to your question