Question

The number of hours required to do a painting job is represented by the function f(x)=2/x , where f(x) gives the number of hours and x is the number of painters doing the job. How much time will {4, 10, 14, 16, 18} workers take to do the job?

Answer 1

So do you know what variable the question just gave you?
"{4, 10, 14, 16, 18}"
Is this the x, or the y?

Answer 2

y

Answer 3

Not quite
"x is the number of painters doing the job."
" {4, 10, 14, 16, 18} \(\color {red}{workers}\)"

Answer 4

Essentially plug in those numbers in place of x each time and see what numbers you get for f(x)