no need for explanation

Cost Function. Suppose the cost to manufacture a product is given by f ( x, y ) = Vx+vy The domain of f(x,y) is O the set of all points (x,y) in the xy-plane where x 2 0 and y 2 0 the set of all points (x,y) in the xy-plane where x 2 0 the set of all points (x,y) in the xy-plane where y 2 0 none of the other answers O the set of all points (x,y) in the xy-planeSales. Suppose a bicycle company projects sales to increase with the function /(x) = 3x- + 2x Using the definition of the derivative, f'(x) is equal to O 3h4 + 3hx + 2h O lim 3h- + 6hx + 2h h O lim 3h2 + 6hx + 2h 3h- + 3hx + 2h 3h- + 6hx + 2h O lim she + h- 0 O None of the other answers 3hf + 6 Submit AnswerIntegration by Substitution. Consider the integral 5x + 10 Jo x2 + Ax + 2 dx After substitution into u, the new integral can be written 1 - du (a) The value of A is O x + 2 O 10 O 5x O O 2.5 O 5 O 5x + 2 (b) The upper limit of integration b is 28 60 0 0 0 0 0