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2. What is the value of each statement after all operations have been performed? [4 each] 18 - 7 + 3 + 5 / 2 b. 3/3 + 3 % 3* 3 - 3 a. I c. 5 $ 10 + (6.3 / 3. (5 - 1)) 3. Write the following mathematical expressions using C++ operators. [3 each] a. a -5b x b. c+d Bonus. What library must be included to enable keyboard input and monitor output? [1]