First you got to multiply 2x7=14x then multiply again 2x3=6 so the answer to the equation will be 2(7x+3)=(14x+6)
Use a box. Split the terms into the boxes and then multiply across. Sort of like area multiplication, only with terms.
3 5x
4y 12y 20xy
3 9 15x
11 is your answer I think
Question 1: B(-108)
Question 2: D(32)
Question 3: A(-147)
Question 4: A(-120)
Question 5: D(360)