7. You are scheduled to receive a $750 cash flow in one year, a $1,000 cash flow in two years, and pay a $300 payment in four years. If interest rates are 6 percent per year, what is the combined present value of these cash flows?

To find the combined present value of these cash flows, we need to discount each cash flow back to its present value using the given interest rate. The present value of a future cash flow can be calculated using the present value formula:

Present Value = Cash Flow / (1 + Interest Rate)^Number of Years

Let's calculate the present value for each cash flow:

For the $750 cash flow in one year:
Present Value = $750 / (1 + 0.06)^1
Present Value = $750 / 1.06
Present Value = $707.55

For the $1,000 cash flow in two years:
Present Value = $1,000 / (1 + 0.06)^2
Present Value = $1,000 / 1.1236
Present Value = $890.93

For the $300 payment in four years:
Present Value = $300 / (1 + 0.06)^4
Present Value = $300 / 1.26248
Present Value = $237.61

Now, we can find the combined present value by summing up the present value of each cash flow:

Combined Present Value = $707.55 + $890.93 + $237.61
Combined Present Value = $1,835.09

Therefore, the combined present value of these cash flows is $1,835.09.