3. Write the complex number 1 +i into polar form 1 -i
*A. cosπ +isin3π
B. cosπ +isinπ4 44
C. cosπ +isinπ 66
D. cos3π +isin3π 44
E. cosπ +isin3π 4

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.