Evaluate f(x)=6x+2 for each of the following: a f(-9)=square b f(x+3)=square C. f(-x)=square

a) To evaluate $f(-9)$, we substitute $x = -9$ into the function $f(x) = 6x + 2$.<br /><br />$f(-9) = 6(-9) + 2 = -54 + 2 = -52$<br /><br />So, $f(-9) = -52$.<br /><br />b) To evaluate $f(x+3)$, we substitute $x = x+3$ into the function $f(x) = 6x + 2$.<br /><br />$f(x+3) = 6(x+3) + 2 = 6x + 18 + 2 = 6x + 20$<br /><br />So, $f(x+3) = 6x + 20$.<br /><br />c) To evaluate $f(-x)$, we substitute $x = -x$ into the function $f(x) = 6x + 2$.<br /><br />$f(-x) = 6(-x) + 2 = -6x + 2$<br /><br />So, $f(-x) = -6x + 2$.