Romeo paid 380.75 in car repairs the sales tax is 7.5%. What is the total that Romeo has to pay

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).

Answer for 10 points show work you guys in advanced < 3

What is the interquartile range (iqr) of the data set represented by this box plot?