What are the types of roots of the equation below?
x4 -81 = 0
Four complex
Two complex and two real
Four real

Bed a is seven feet long. bed b is 7/8 of bed a. bed c is 7/8 of bed b. bed d is 7/8 of c. a. come up with an expression for the length of bed d. b. what is the length of bed d?

Which is the graph of the function y=2(4)^x

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.