Giving brainliest!

what is the length of the indicated arc?

a) pi

b) (1/2) pi

c) 2 pi

d) 4 pi

e) none if the above

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Which of the following will form the composite function?