How do you find the intervals that are concave up or down, the inflection point, the critical points, and the local max and min of problem 53? Thanks!

I need help with a and b please use Microsoft excel.

I need help with parts b-d

need answer and all the work

Max Z = 5X1 + 3X2 Subject to: 6X1 + 2X2 ≤18 15X1 + 20X2 ≤ 60 X1, X2 ≥ 0 Determine the Sensitivity Range for each objective function coefficient. please answer in typing format

The arrows can only be dragged to z scores that are accurate to 1 place after the decimal point (these values correspond to the tick marks on the horizontal axis). Select from the drop down menu to shade to the left, to the right, between or left and right of the z-score.

Please clearly shows the steps. I'm not sure if my answer(1/3) is correct, so please just ignore it and calculate by yourself.

For the following situations, identify the type of variable (qualitative, nominal, ordinal, quantitative, discrete, continuous, interval, ratio), multiple types may apply.   1) Data of weight gain of rats fed only junk food for four weeks in an experiment.  2) Data collected from the order that students finsih their exam. 3) Time it takes for a car battery to die

Problem 2. Express each of the following intervals in the bracket notation for sets. a. [3,00) b. (-0,3) c. [3,5) d. (3,5) e. [3,5] (8.5.1) (8.A) = T 8= (6)1 A = (S)1.8=(n)t