I WILL MARK YOU THE BRANILIEST IF ANSWER IS CORRECT. PLEASE HELP ME! For what value(s) of t, with 0 ≤ t ≤ 4, is the slope of the curve undefined for the graph defined by x = 2t - 2 sin(t), y = 2 - 2 cos(t) ? Type your answer in the space below to the nearest whole number. (ex: 4)

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?