What is x^2-x=0? it's factoring equations, but i'm not sure how to factor x-x=0, and then put it into curly brackets.

The scale for a map is 20 miles = 1/2 inch. the distance between two towns on the map is 3 3/4 inches. what is the actual distance between these towns? 150 miles 38 miles 75 miles 135 miles

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

What is the frequency of the sinusoidal graph?