Find the area of the region enclosed by the inner loop of the curve. r = 2 + 4 sin θ

Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k

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?

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1