Question 104225
A CD costs $3.50 more than a tape. Write an expression for the total cost of 1 CD and 1 tape. 

 solution:

Let the cost of a tape =  x 

Cost of the CD = x + $3.50

 Total cost of 1CD and 1tape =  (x+ $3.50)+x 
                             = 2x +$3.50

 Expression for total cost = 2x+ $3.50