The first number is equal to 4 times the second number, the difference of the number is 12, what are the two numbers?

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?

Bring the fraction a/a-4 to a denominator of 16-a^2

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?