Find the exact value by using a half-angle identity. sin(7/8)

Which translation maps the vertex of the graph of the function f(x) = x2 onto the vertex of the function g(x) = x2 – 10x +2?

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?