Sarah purchased a manufacturing machine worth $30,000 for her factory. The value of the machine decreases every year by $1,250. Which explicit equation represents the value, v, of the years after the purchase? chine t A v = 30,000t-1,250 v = 30,000 1,250t C v=30,000 1,250-t D v=30,000 1,250+t General 01:29: