Michael perez deposited a total of $2000 with two savings institutions. one pays interest at a rate of 6%/year, whereas the other pays interest at a rate of 7%/year. if michael earned a total of $136 in interest during a single year, how much did he deposit in each institution? (let x and y denote the amount of money, in dollars, invested at 6% and 7%, respectively.)

Madeline quits her job, at which she was earning $20,000 per year. she then takes $50,000 out of savings, on which she was earning 10% interest, and uses it to buy supplies for her business. she also pays $10,000 in rent on the building and $15,000 in additional labor costs. in her first year of operations, madeline receives $150,000 in revenue from sales. instructions: round each answer to a whole number. madeline's accounting cost is