What is the inverse of the function f(x)=x+9

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Find the area of a parallelogram with the given vertices. p(-2, -5), q(9, -5), r(1, 5), s(12, 5)

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?