Please help, ive already done half i just done know how to find 1

Point m is located at (-4, -6). what is located 4 units from point m? ( its on a coordinate plane by the way. )

At saturday nights football game there were 18 less fans than half the fans at friday nights game.there were "x" fans at friday's game.write an expression to represent the number of fans at saturday's game. *** urgent***

Abacteria population doubles in size every 5 hours. after 5 hours, the sample contains 2,000 bacteria. which equation best models y, the population size after x hours? y = 1000(1.15)x