How to find the area of a floor that is 12ft by 15ft?

H(x)=4x2-5x h(-3) what is the answer?

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).

What is the equation of this graphed line? enter your answer in slope-intercept form in the box.