Could you show me using excel please (showing formulas)

Cash flows for two projects over 4 years are given below. MARR = 10%. n Project Project A B 0 -$9,500 -$9,500 $500 $1500 2 $2500 $2500 3 $5500 $5500 4 $6500 $8500 a. Calculate the payback periods for each project: Payback period for Project A is years. Payback period for Project B is years. b. Calculate the present worth for each project over the 4 years (dollar amounts rounded to 2 decimal places, e.g. 2300.54): PW of Project A is $ PW pf Project B is $