Question

I f(x)=3x,
X.= 1,X = 5​

Answer 1

Answer:

f(x)=3x

f(1)=3×1

=3

f(5)=3×5

=15

Answer 2

Answer:

$f(x) = 3x \\ \\ \\ for \: \: x = 1 \\ \\ \\ f(x) = 3 \times 1 = 3 \\ \\ \\ for \: \: x = 5 \\ \\ f(x) = 3 \times 5 = 15$