Find the absolute maximum and minimum values of the function, if they exist, over the indicated interval. Also indicate the x-value at which each extremum occurs. 320 f(x ) = x+ y; X : (0,00) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The absolute maximum value(s) is(are) |at x=. (Simplify your answers. Type integers or decimals rounded to three decimal places as needed. Use a comma to separate answers as needed.) O B. There is no absolute maximum value. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The absolute minimum value(s) is(are) |atx =. (Simplify your answers. Type integers or decimals rounded to three decimal places as needed. Use a comma to separate answers as needed.) O B. There is no absolute minimum value. Suppose that the monthly cost, in dollars, of producing x chairs is C(x) = 0.006x* + 0.07x + 15x + 700, and currently 50 chairs are produced monthly. a)What is the current monthly cost? b)What is the marginal cost when x = 50? c)Use the result from part (b) to estimate the monthly cost of increasing production to 52 chairs per month. d)What would be the actual additional monthly cost of increasing production to 52 chairs monthly? a) The current monthly cost is $]. (Round to the nearest cent as needed.) b) The marginal cost when x = 50 is $ per item. (Round to the nearest cent as needed.) c) Use the result from part (b) to estimate the monthly cost of increasing production to 52 chairs per month. The monthly cost in increasing production to 52 chairs monthly is $. (Round to the nearest cent as needed.) d) The actual additional monthly cost of increasing production to 52 chairs monthly is $]. (Round to the nearest cent as needed.)