Can someone please help me to solve all the following questions and show all cash flow diagrams? Please and thank you!!!!!

Q1. A cash flow sequence starts in year 1 at $14000 and decreases by $150 each year through year 12. (a) Determine the value of the gradient G; (b) determine the amount of cash flow at the end of year 8; Show (Draw) your cash flow diagram. (20 points) Q2. Amazon is considering purchasing a sophisticated computer system to "cube" a book's dimensions-measure its height, length, and width so that the proper box size will be used for shipment. This will save packing material, cardboard, and labor. If the savings will be $185,000 the first year, $200,000 the second year, and amounts increasing by $15,000 each year through year 9th, what is the total present worth of the system at an interest rate of 5% per year? Show (Draw) your cash flow diagram. (25 points) Huidizing bed Incinerator Q3. Chemical costs associated with a packed bed flue gas incinerator (for odor control) have been decreasing uniformly for 5 years because of increases in efficiency. If the cost in year 1 was $140,000 and it decreased by $3000 per year through year 5, calculate the present worth of the costs at 5% interest rate per year? Show (Draw) your cash flow diagram. (30 points) Q4. You want to be able to withdraw $1000 from a savings account at the end of year 1, $1,200 at the end of year 2, $1,400 at the end of year 3, and so on over a total of 5 years. How much money must be on deposit right now, at the end of year 0, to just deplete the account after the 5 withdrawals if interest is 4% compounded annually? Show (Draw) your cash flow diagram. (25 points)