test the symmetric of a function f(x)=x5+x3+x plz answer my question and you will be mark as

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.