How do I go about answering question 5, "Value in 2 years", "Aftertax beginning salary", "Pretax Beginning salary". Please show me how I would go about calculating these.

Chapter 4 The MBA Decision Input area: $ 65,000 40 Current salary Years until retirement Salary increase Tax rate 3% 26% A A Wilton Tuition per year Books & Supplies Starting salary Signing bonus Salary increase Tax rate A 70,000 3,000 110,000 20,000 4% 31% A A Mount Perry Tuition per year Books & Supplies Signing bonus Starting salary Salary increase Tax rate 85,000 4,500 18,000 92,000 3.5% A A 29% Both schools Health insurance Room & board increase AGA 3,000 2,000 Discount rate 6.30% 3. Current job Aftertax income $ 48,100.00 Present value of salary $ 1,044,728.37 Wilton MBA PV of tuition & expenses $151,377.23 Aftertax bonus 13,800.00 PV of bonus 12,212.72 Aftertax salary $ 75,900.00 PV of salary in two years $ 1,862,801.41 Value of salary today $ 1,648,542.05 PV of attending Wilton S 1,509,377.54 Mount Perry MBA PV of tuition & expenses 89,462.37 PV of signing bonus $ 12,022.58 Aftertax salary $ 65,320.00 PV of salary in one year $ 1,509,165.86 PV of salary today $ 1,419,723.29 PV of attending Mt. Perry S 1,342,283.50 Current job PV minus bonus after Wilton costs Value in 2 years Aftertax beginning salary Pretax beginning salary Chapter 4 The MBA Decision Input area: $ 65,000 40 Current salary Years until retirement Salary increase Tax rate 3% 26% A A Wilton Tuition per year Books & Supplies Starting salary Signing bonus Salary increase Tax rate A 70,000 3,000 110,000 20,000 4% 31% A A Mount Perry Tuition per year Books & Supplies Signing bonus Starting salary Salary increase Tax rate 85,000 4,500 18,000 92,000 3.5% A A 29% Both schools Health insurance Room & board increase AGA 3,000 2,000 Discount rate 6.30% 3. Current job Aftertax income $ 48,100.00 Present value of salary $ 1,044,728.37 Wilton MBA PV of tuition & expenses $151,377.23 Aftertax bonus 13,800.00 PV of bonus 12,212.72 Aftertax salary $ 75,900.00 PV of salary in two years $ 1,862,801.41 Value of salary today $ 1,648,542.05 PV of attending Wilton S 1,509,377.54 Mount Perry MBA PV of tuition & expenses 89,462.37 PV of signing bonus $ 12,022.58 Aftertax salary $ 65,320.00 PV of salary in one year $ 1,509,165.86 PV of salary today $ 1,419,723.29 PV of attending Mt. Perry S 1,342,283.50 Current job PV minus bonus after Wilton costs Value in 2 years Aftertax beginning salary Pretax beginning salary