Rewrite the equation by completing the square. x^{2}+4x-21 = 0

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?

Write a story that matches with the expression 42x-5 pls hurry

Acircle has a circumference of 28.36 units what is the diameter of the circle