i have a couple of question for people of they are willing to help me please,

1) the equations connecting the running cost of a piece of apparatus,R,and the number of times it is used in one month,N, are

    R=(3N + 15)
         ----------
               8
and

    N=  8R
         -----    -   5
           3     
use these equations to calculate

   a) the value of R when N=27




   b) the value of N when R= 42




   c) the value of R when N=0




this is really getting to me please help thanks to anyone who can )

Last edited by kcleigh2 (2005-11-25 11:01:02)