Problema Solution
Victor already owns 1 stamp, and additional stamps are priced at 1 per dollar. Write an equation that shows the relationship between the money spent on additional stamps d and the total number of stamps s.
Answer provided by our tutors
let 'x' be the number of stamps that Victor bought
since Victor already has 1 stamp and buys another x stamps he will have a total of s stamps:
1 + x = s
x = s - 1
d the money spent of stamps is
d = 1*x = 1*(s - 1)
d = s - 1 is the equations we are looking for.