Is 1.308 thousand feet equal to 1,308 feet?

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

21 a stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one. how long are the two pieces?

Mrs. robinson bought a novel at a bookstore on sale for 20% off its regular price of $29.99. mr chang bought the same novel at a different bookstore for 10% off its regular price of $25. which person received the better discount?