The sum of the first 15th terms is 495 and the sum of the Next 8 terms is 540 find the AP

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?

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!