the width of a rectangle is representing by 5+2y. the length is twice as long as the width. what is the perimeter of the rectangle

The ratio pv to nrt is plotted against pressure for ch4 at 0°c and 200°c. why does the curve for 0°c drop below the horizontal line for an ideal gas whereas the curve for 200°c does not?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Which translation maps the vertex of the graph of the function f(x) = x2 onto the vertex of the function g(x) = x2 – 10x +2?