9. Knowing that lim x* = 8, what values of x guar- x-+2 antee that 3 is within: (a) 0.5 units of 8? (b) 0.05 units of 8?13. You need to cut four pieces of wire (exactly the same length after the cut) and form them into a square. If the area of the square must be within 0.06 inches of 25 inches, then each piece of wire must be within how many inches of 5