If a function f is defined such that f(x+3) = f (x) + f(3) show that f(-3) = -f(3)

Cumulative examcumulative exam active13time remaining02: 44: 18the graph represents the data cost for monthly internetservice for a cell phone.which function, c(x), represents the monthly cost in dollarsin terms of x, the number of gigabytes used in a month? cell phone internet service(15,5x + 10150,0sx522 < x < 664x115, osx< 25x + 20, 2< x< 650, 65815%,monthly cost (s)20x + 5| 50x,0 < x < 22 < x < 664x( 15x, osx< 2c(x) = 5x + 10, 2< x< 6150x, 65 x5+1234 5 6 7 8 9 10 11 12gigabytes used

Negative 5 1/12 + negative 4 1/4 + 6 3/4

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?