What is 4/9x+7=1/2 and plz give me full steps

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).

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

What is the solution set of the quadratic inequality x^2-5< or equal to 0