Step-by-step explanation: so in the first month they charge 149+ 25 which equals 174. then you 25x11 which gets you 275.then you add those 2 and get 449. then you 449 plus 275 and get 724.
The function representing the price of the ring x years after 2000 is f(x) = (100 + 35)/100 *x + 590 = 135/100 *x + 590 = 1.35x + 590 i.e. f(x) = 1.35x + 590