How would this be turned into a scientific notation for 3,134,000,000

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons

What is the slope of the line that contains the points (-2,1) and (0,-3)