The bus driver made 6 stops on his way into town. no passengers exited the bus. by stop 3, there were 9 passengers on the bus. how many stops did it take to have 13 passengers on the bus? a. 2 b. 3 c. 4 d.

For each expression use a property to write an equivalent expression.

What will the graph look like for a system of equations that has no solution? a. the lines will be perpendicular. b. the lines will cross at one point. c. both equations will form the same line. d. the lines will be parallel.

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)