Can someone please help me!! I'm ebarrassingly struggling on these and they're some of the last things I need to finish. Any help will be extremely appreciated!

ACCOUNTING 120 NAME: Test 4 1. complete the following table. per unit ratio selling price variable cost contribution margin .25 10. 2. compute the break even point in units given a selling price of $ 24, variable cost of $ 6 and fixed costs of $ 40,000 selling price var. cost cm 1 3. compute the break even point in sales dollars given fixed costs of $ 65,000 and a contribution margin ratio of 25. 4. compute the target volume in units to achieve a pre-tax profit of S 86, 000 given a selling price of $ 18.00, variable costs of $ 4.00 and fixed costs of S 74,000. NAME: 5. compute the pay-back period given an investment of $ 190,000 and even cash flows of $ 30,000 per year. 6. compute the pay-back period given an investment of $ 247,000 and cash flow inflows of $ 73,000, 63,000, 64,000 and 52,000. annual cumulative year o year 1 year 2 year 3 year 4 7. compute the net present value of an investment of S 345,000 with cash inflows of S 168,000, 58,000, 62,000, 36,000 and 26,000 pv $1 at 9% 917,842,772,708,650, 1 2 3 4 8. what is the factor for? a. present value of $1, t= 10 periods, 10 % annual. b. present value of $ 1,8 periods, 12% semiannual C. future value of $ 1 to 10 periods, 4 % annual d. future value of an annuity given 20 payments, 6% interest. e. present value of an annuity given 10 payments, 10%