6th grade math help me please

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).

Question 5 spring semester final exam math evaluate

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?