\fQ#5.Find the length and width of a rectangle that has the given perimeter and a maximum area. Perimeter: 68 meters Q##6.Find the point on the graph of the function that is closest to the given point. x} - (x = 1}2.! t-51 3} Q#7. Find the intervals on which f is increasing and decreasing b. Find the local maximum and minimum value of f. c. Find the intervals of concavity and the inflection points. flx)= x*+9x*4 Q#8.Find the number of units x that produces a maximum revenue R in the given equation. R=722"-6x Q#9.Find the number of units x that produces the minimum average cost per unit Cin the given equation. C=0.00L + 3x + 686 A manufacturer wants to design an open box that has a square base and a surface area S of 108 square inches, as shown . What dimensions will produce a box with a maximum volume? Open Box with S=x+4xh =108 V = x2h