Sorry for my dirty paper.. but, please I need the answers.

What could have been done to stop the illegal voting? what about the violence?

Profits are maximized when marginal revenue and marginal costs are a. set c. equal b. less than market price d. greater than market price

Which sentence best explains how steam power changed agriculture in england between 1810 and 1850? a. farmers started using steam-powered machines to spray chemical fertilizers and pesticides. b. livestock farmers began using steam-powered machines to milk cattle and shear sheep. c. steam-powered railways transport and sell agricultural produce far from where it was grown. d. steamships to transport large numbers of people from the united states to english farms.