What does 31/2 gal equal to in cups

How is working backward similar to solving an equation?

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

Asystem of linear equations contains two equations with the same slope. select all of the correct statements. i a. the system may have two solutions. - b. the system may have infinitely many solutions. c. the system may have one solution. o d. the system may have no solution. submit