Ramone tossed 1 quarter, 2 dimes, and 13 pennies in the wishing well at the party. what is the total amount of money as a fraction and as a decimal?

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).

Can someone answer this question? : )

Find the center of the circle that can be circumscribed about efg with e(4,4) f(4,2) g(8,2)