Hello! Can you help me to solve questions 7,8 and 13? Thank you

(Example 2). EXERCISES 14.1 Evaluating Iterated Integrals In Exercises 1-14, evaluate the iterated integral. 13. In x dx dy xy 14. x In y dy 1. 2xy dy dx 15. Find all values of the constant c so that 3. / Laty + Daxdy 16. Find all values of the constant c so that 5 . ( 4 - 1 2 ) dy dx ( xy + 1 ) dydx = 4 + 4c. Jo Evaluating Double Integrals over Rectangles In Exercises 17-24, evaluate the double integral over N y dx dy Jo 1 + xy In 2 pln5 exxty dy dx xyet dy dx ( 6y2 - 2x) dA, R: 0.