Simplify the expression. w^5(w^2)^-4

Consider the diagram. which line segment has the same measure as st? rx tx sr xs

Which of the following is the equation that says that the product of a number and ten is equal to 20 percent of that number ? a) 10n= 2.0n b) 10+n=.20n c) n+ .20n=10 d) 10n=0.20n

Is this a polynomial function? i need to know asap