Which is a composite number? 2,5,11, or 9

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(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?

Find the area of the unshaded square