1. Solve the following system a) b) c) 2x - y = 5 2x + y = 1 8x - 2y = 5 x + 4y = 7 3x + 4y = 14 -12x + 3y = 7 2. A milktea store in San Jose has daily fixed cost of $400. Each cup of milktea costs $3 to produce and is sold for $5. The beak-even point occurs where revenue is equal to cost. Find the break-even point. 3. A milktea store in Cupertino has daily fixed cost of $300. Each cup of milktea costs $2 to produce and is sold for $5. The beak-even point occurs where revenue is equal to cost. Find the break-even point