The Candy Factory sells candy by the pound, charging $1.75 per pound for quantities up to and including 25 pounds. Above 25 pounds, the Candy Factory charges $1 25 per pound for the entire quantity, plus a quantity surcharge k. If x represents the number of pounds, the price function is as follows. 1.75x for x $ 25 P(x) = 1.25x + k for x > 25 Find k such that the price function p is continuous at x = 25. The price function p is continuous at x = 25 when k = . (Type an integer or a decimal.)