Concept check 1. 54/32 converted to a mixed number is 22/32 1.6875 1/38 1 22/32 2. the product of one and four thirty-seconds and twenty thirty-seconds is 1 24/32 45/64 56/32 720 3. one and eight thirty-seconds divided by twelve thirty-seconds is 480/1024 20/1024 3 1/3 3 40/32 4. a u. s. treasury bond is trading at 98 and 6/32. convert this price to its decimal form. 98.19 96.63 9/86 98.06 5. what is the percentage increase if the s& p 500 index is currently trading at 1,100 and rises 55 points? 4.5% 5% 55% 5.5%

Power plants that rely on coal increase the amount of sulfur dioxide that dissolves into the air, eventually increasing the acidity of precipitation. the higher acidity of rain and snow can damage forests by making it more difficult for plants to absorb minerals from the soil. the equations below provide information about the market demand and supply of electricity. there is a constant marginal external cost of $25 per unit of electricity. d: qd= 200 – 2ps: qs=p – 10what quantity of electricity satisfies allocative efficiency in this market? a. 60b. 70c. 50d. 43.3