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Brian receives a weekly allowance for completing all of his chores. The current amount Brian receives is 13. That is 30% more than he got during elementary school. What was Brian's weekly allowance then?Two trains leave stations 228 miles apart at the same time and travel toward each other. One train travels at 85 miles per hour while the other travels at 92 miles per hour. How long will it take for the two trains to meet?You roll a 6-sided die two times.What is the probability of rolling a 1 and then rolling a 2?If 9000 is invested at 3% compounded continuously, what is the amount after 8 years?Aaron puts 800.00 into an account to use for school expenses. The account earns 11% interest, compounded quarterly. How much will be in the account after 8 years?