What cross section shape is formed when the figure is cut as shown?

rectangle
pentagon
circle
triangle

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Walking at a constant rate of 8 kilometers per hour, juan can cross a bridge in 6 minutes. what is the length of the bridge in meters?