Which equation below would be perpendicular to the line x=5

How to write four times a number,minus 6,is equal to theee times the number+8 as an equqtion

What is the inverse of f(x) = 6x -24

Acertain drug is made from only two ingredients: compound a and compound b. there are 3 millimeters of compound a used for every 4 millimeters of compound b. if a chemist wants to make 693 milliliters of the drug, how many milliliters of compound a are needed?