Which equation has a constant of proportionality equal to 3

Somone me i want to know what 18 hours out of 24 hours in a fraction

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9

Tomas used 3 1/3 cups of flour and now has 1 2/3cups left. which equation can he use to find f, the number of cups of flour he had to begin with? f+3 1/3=1 2/3 f-3 1/3=1 2/3 3 1/3f=1 2/3 f/3 1/3=1 2/3