What is the sum of the first eight terms of a geometric series whose first term is 3 and whose common ratio is ?

Sam makes his sales calls according to a pattern. he travels either north or south depending on the calendar. some of his past trips were as follows: on february 17, april 24, june 10, september 19, and november 3 he drove north. on february 28, may 25, august 22, november 20, and december 18, he drove south. describe sams' pattern. in which direction will sam drive on oct4 and oct 24?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

With number 11 ( show how you got the answer)