Asmall garden shop must decide the number of christmas trees to stock for the upcoming holiday season. from past years, they know that the number of trees demanded will be either 30 or 45 with probabilities of 0.5 each. if they order 30 trees, they will make a profit of $900, regardless of the number of trees demanded. if they order 45 trees, and only 30 are demanded, they will have leftover trees, and their profit will be only $600. on the other hand, if they order 45 trees and 45 are demanded, their profit will be $1350. if they order 45 trees, the expected value of profit will be $ (enter your response as an integer.)