If f(x)=-x+8 and g(x)= x^4 what is (g°f)(2)?

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).

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

Express -5 2/5 as an improper fraction.