If function f is defined by f (x) = 2/3-4 what is f (-18)

Gotcha!

Since there is no variables listed, I'll solve it both ways. : -)

f (-18) = 2/3 (-18) - 4

Multiply the fraction by negative 18!

f=-12-4

answer: f=-16

If it's this way then it goes like this:

f (-18) = 2/3-4 (-18)

f=2/3+72

f=218/3 or f=72.66666 ... Rounded: 72.7