What is the mean of the data?

What value of x is in the solution set of –5x – 15 > 10 + 20x?

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

The graph of f(x) is obtained by reflecting the graph of f(x)=-3|x| over the x-axis. which equation describes f(x)? a) f(x)=3|x| b) f(x)=|x+3| c) f(x)=-3|x| d) f(x) = - |x+3|