The total cost to go horseback riding is x dollars per hour plus a $2 fee for renting a helmet. Which expressions represent the cost, in dollars, for 4 people to go horseback riding for 3 hours each? Select all that apply.

4(3x+2)

3(4x+2)

6x+3+6x+5

4(3x)+4(2)

12x+8

3x(4)+2