I need help with these cvp questions

Tina, an entrepreneurial business student, wants to set up a business completing tax forms for other students. Her price would be $55.00 for each job. Fixed expenses include $264.00 for the tax software which Tina would purchase. Tina would hire some accounting students to complete the forms, paying them for two hours at $13 per hour for each job. She would also have paper and supplies costs of $5 per job. How many jobs would she have to generate before she starts to make a profit? Make the assumption that it takes an accounting student two hours to complete one tax return. Tina would have to generate tax returns before she starts to make a profit. (Round up to the nearest unit.)A booth in a mall sells calendars. The calendars are purchased for $3.46 each and then sold to customers at a price of $11.31. Space is rented for $179.00 per day and wages amount to $313.00 per day. Answer each of the following independent questions (a) If the wages decrease to $262.92 per day, and other variables remain the same, how many calendars must be sold to break even? (b) If the calendars are put on sale at 27% off the regular price, and all other variables remain the same, calculate profits if 165 calendars are sold in a day? (a) The number of calendars required to break-even when wages decrease to $262.92 is (Round up to the nearest whole number.) (b) If the calendars are put on sale at 27% off the regular price, and all other variables remain the same, the profit earned if 165 calendars are sold in a day is $ (Round to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)The neighbourhood bookstore sells novels for $17 per unit. The cost to purchase one book is $15. The store has fixed costs per month of $2000. The store estimates that they can sell 3400 books each month. (a) Compute the break-even point in units. (b) Compute the break-even point in sales dollars (c) Compute the break-even point as a percent of capacity. (a) The break-even point in units is - | books. (Simplify your answer.) (b) The break-even point in sales dollars is $ - (Simplify your answer.) (c) The break-even point as a percent of capacity is -% (Round to two decimal places as needed.)