30 POINTS In the diagram , angle ADC is a central Angle and measure angle ADC = 60 degrees. What is measure angle ABC?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?