John needs to cut three strips of wood, 25.5cm, 15.3cm and 9.25cm long. he has a strip that is 72cm long. how long will the leftover piece be after he cuts what he needs?

Charles is on a 8 1/2 mile bike ride. he stops for a rest after he’s gone 5 2/5 miles. how much farther does he still have to go?

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]