CAN SOMEBODY PLEASE ANWSER MY QUESTIONS PLEASE ITS WORTH 25 POINTS AND BRAINIST FOR WHOEVER AWSNERS RIGHT FRIST

Write a division equation you could use to find a, the number of miles ava is in charge of. what is the value of a? write your answer is simplist form

What are the possible rational zeros of [tex]f(x) = x^4+2x^3-3x^2-4x+18[/tex]

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).