Write an algebraic expression that represents the difference of x and 8×28

Acompany is making new soccer uniforms for a team. the company uses 2.5 yards of fabric for each shirt. the company uses 82.5 yards of fabric to make shirts and shorts for 15 players. the equation and solution below represents the situation. 15(2.5+x)=82.5; x=3 what does the solution, x=3, represent?

What are the solutions to the equation 4x2+3x=24-x

Which equation represents the function on the graph?