the seats in a theatre are arranged so there are 80 seats in the 1st row, 77 seats in the 2nd row, 74 seats third row and so on for 18 rows altogether. how many seats are there in the last row?

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 angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

For what value of (y) is 3^3/3^y =1/9