sir i am stuck for this question

only 36,37

a. shortage of 25 units would exist, and price would tend to rise. b. surplus of 45 units would exist, and price would tend to fall. c. shortage of 20 units would exist, and price would tend to rise. O d. surplus of 25 units would exist, and price would tend to fall. Jestion 36 David tunes pianos in his spare time for extra income. Buyers of his service are willing to pay $135 per tuning. One particular week, David is willing to tune the first piano for $115, the second piano fo ot yet $125, the third piano for $140, and the fourth piano for $175. Assume David is rational in deciding how many pianos to tune. His producer surplus is swered Marked out of O a. $20. Flag question b. $75 C $30 O d. $-15. Question 37 Which of the following is the best example of a variable cost? Not yet answered a. monthly wage payments for hired labor Marked out of 1.00 O b. monthly rent payments for a warehouse Flag question c annual property tax payments for a building O d. annual insurance payments for a warehouse Question 38 If the price elasticity of supply is 1.5, and a price increase led to a 3% increase in quantity supplied, then the price increase is about Not yet answered O a. 0.2%. Marked out of 1:00 O b. 0.5%