#5 help me solve this problem please

The number of visitors P to a website in a given week over 31-year period is given by P(t}=116 + (t 86) 2 0.021_ where t is the week and 1st: 52. a) Over what interval of lime during the 1year period is the number of visitors decreasing? b} Over what interval oftirne during the 1-year period is the number of visitors increasing? no) Find the critical point1 and interpret its meaning. a) The number ofvisitors is decreasing over the interval :l. (Simplify your answer. Type integers or decimals rounded to three decimal places as needed. Type your answer in interval notation.) b} The number of visitors is increasing over the interval (Simplify your answer. Type integers or decimals rounded to three decimal places as needed. Type your answer in interval notation.) a) The critical point is :|. (Type an ordered pair. Type integers or decimals rounded to three decimal places as needed.) Interpret what the critical point means. The critical point means that the number of visitors was E in week El at approximately I] visitors. (Round to the nearest integer as needed.)