Sorry, but I suck at word problems with linear equations

This just involves   setting up  a linear equation  like you  might  normally do

Let 1990   = 0     so  2001  =   11

Let  the  first point  be     ( 0, 105)   and  let the  second point  be  (11, 248)

Find  the slope between these points

[ 248 -105  ]  / [ 11  -  0  ]   = 143 /  11  =   13

This is the  slope of our  line and it indicates  that the  tuition  increases by $13  every year

So    using (0, 105)   the  equation is

C  = 13x + 105

2004  is  14  years  after 1990

So...just  calculate     13 (14)  + 205

For the second  one  just  solve this

352  =  13x + 205

Remember  that  the  x you  find  here is the  number of years AFTER 1990

If you  get  stuck...let  me  know....