Estimate 68.41 - 57.570 by first rounding each number to the nearest whole number.

Which of the following could be the graph of the equation y = -2x + 5

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).

Find the value of x for which the lines are parallel.