7. Determine the first term of the arithmetic series given S, = 672 and d =4. (2 marks) 8. The "Math is Awesome" Foundation wants to award a million dollars in scholarship money to high school math students across Alberta. The plan is to give away $1000 in the first week, $2000 in the second week, $3000 in the third week, and so on, until the Foundation can no longer give out a full scholarship amount. How many weeks will it take until the "Math is Awesome" Foundation's bank balance is too low to give out a full scholarship