Which line in the following program contains the header for the showdub function? 1 #include 2 using namespace std; 3 4 void showdub(int); 5 6 int main() 7 { 8 int x = 2; 9 10 showdub(x); 11 cout < < x < < endl; 12 return 0; 13 } 14 15 void showdub(int num) 16 { 17 cout < < (num * 2) < < endl; 18 } 1. 4 2. 6 3. 10 4. 1

How would you cite different books by the same author on the works cited page? moore, jack h. folk songs and ballads. salem: poetry press, 1999. print. moore, jack h. ballads in poetry – a critical review. dallas: garden books, 1962. print. moore, jack h. folk songs and ballads. salem: poetry press, 1999. print. –––. ballads in poetry – a critical review. dallas: garden books, 1962. print. moore, jack h. ballads in poetry – a critical review. dallas: garden books, 1962. print. moore, jack h. folk songs and ballads. salem: poetry press, 1999. print. moore, jack h. ballads in poetry – a critical review. dallas: garden books, 1962. print. –––. folk songs and ballads. salem: poetry press, 1999. print.