Given: f(x) dx = 18 109(x) dx = 12 Find: 12/(x)-7g(x) + h(x)]dx Lih(x) dx = 25 Business Applications The marginal cost function for a given commodity is given by the equation C'(x) = 2x + 35 0x 50 Calculate the change in cost from production of 20 to 25 units. (4 poir A company sells x units of merchandise weekly. The weekly marginal revenue is given by R'(x) = 40 -0.3x 0x 500 Find the change in revenue if weekly sales increases from 200 to 300 units. ABC Inc. manufactures cleaning supplies per month. The marginal profit is given by P'(x) = -2x + 158 Determine the change in profit from selling 100 items to 200 items.