3(6g + 3) please help

Graph the equation. select integers for x

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)