Evaluate f(-12) given f(x) = -21x - 12

Answer:The answer for the given function is f( -12 ) = 240.Step-by-step explanation:Given:[tex]f(x)=-21x-12[/tex]To Find :F ( -12 ) = ?Solution:Function:A function is like a machine that gives an output for a given input. A function has an independent variable which is called the input of the function. The output for a given input is called the dependent variable. For Examplef ( x ) = x + 3x = independent variablef ( x ) = Output for a given inputHere we have[tex]f(x)=-21x-12\\Put\ x=-21\\\therefore f(-12) = -21\times -12 - 12\\\therefore f(-12) = 252 - 12\\\therefore f(-12) = 240[/tex]Therefore f(-12) = 240