I have 3 questions about Math. Thank you foe helping me.

1. (10 pts) Solve 3x3 + 2x2 123: 8 = U. 2. [10 pts) A coffee house has 20 pounds of coffee that sells for $4 per pound. How many pounds of coffee that sells for $8 per pound should be mixed with the 20 pounds of $4 per pound coffee to obtain a blend that will sell for $5 per pound? How much of the $5 per pound coffee is there to sell? 3. (10 pts) Find the center and radius of the circle x2 + y2 + 4x 2y r51- = 0. Sketch the graph of this circle