Answer
(a) $f(7)=19$
(b) $\\f(0) = -2$
Work Step by Step
RECALL:
$f(a)$ represents the value of the function $f$ when $x=a$.
Replace $x$ with the given value to obtain:
(a)
$f(7) = 3(7)-2
\\f(7)= 21-2
\\f(7)=19$
(b)
$f(0) = 3(0) -2
\\f(0)= 0-2
\\f(0) = -2$
