write the equation for the following statement.
1.the cost C of fish varies directly as its weight w in kilogram.
2.the distance D travelled by a car varries directly as its speed s.
3.an employees salary S varies directly as the number of days d he has worked.
4. the density d of air varies inversely as the volume v of water in the atmosphere.
5.the base b of a triagle varies inversely as its altitude h.
6.the mass m of an object varies inversely as the acceleration due to gravity g.
7.the force F applied to an object varies jointly as the mass m and the acdeleration a.
8.the appropraite length I of a rectangular beam varies jointly as its width and its depth d.
9.the pressure P of a gas varies directly as its temperature t and inversely as its Volume V.
10. the acceleration A of an object varies directly as the distance d it travel and inversely as the square of the time t it travel.​