An environmental study conducted in a particular city suggests that if a chemical plant emits more than 20 million tons of chemicals each year, the water supply will become contaminated beyond the point where filtration techniques can make it safe for drinking. If this is all the information the government has, which solution to reduce pollution is appropriate? Check all that apply.

___Corrective taxes

___Tradable permits

Bakery has bought 250 pounds of muffin dough. they want to make waffles or muffins in half-dozen packs out of it. half a dozen of muffins requires 1 lb of dough and a pack of waffles uses 3/4 lb of dough. it take bakers 6 minutes to make a half-dozen of waffles and 3 minutes to make a half-dozen of muffins. their profit will be $1.50 on each pack of waffles and $2.00 on each pack of muffins. how many of each should they make to maximize profit, if they have just 20 hours to do everything?