Can You guys please help me with these two questions. It would be much appreciated. Plus it is due today and I can't seem to figure it out.

Listed in the table is the percentage of students who chose each kind of juice at lunchtime. use the table to determine the measure of the central angle you would draw to represent orange juice in a circle graph

What is the value of the discriminant, b2 ? 4ac, for the quadratic equation 0 = x2 ? 4x + 5, and what does it mean about the number of real solutions the equation has?

Simplify the expression below -3(10x+4y)+6(6x-2y)