A cell phone plan charges $15 a month plus $0.10 per minute for phone calls. Gertrude paid $32.50 last month for minutes of phone calls

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).

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

What is the order of these fractions from least to greatest 2/3 7/10 5/8 65/100