The Candy Factory sells candy by the pound, charging $1.40 per pound for quantities up to and including 15 pounds. Above 15 pounds, the Candy Factory charges $1.30 per pound for the entire quantity, plus a quantity surcharge k. If x represents the number of pounds, the price function is as follows. 1.40x for x S 15 p(X) = 1.30x + k for x > 15 Find k such that the price function p is continuous at x = 15. The price function p is continuous at x = 15 when k = (Type an integer or a decimal.)