Problema Solution
Between 1992 and 1999, you added approximately 15 stamps per year to your collection. In 1997 you had 130 stamps. Find an equation that represents the number of stamps in your collection, y, in terms of the year, t. Let t = 0 correspond to 1992.
Answer provided by our tutors
we will assume that the equation is linear, that is:
y = 15t + C,
where C is constant
in 1997 you had 130 stamps means:
t = 1997 - 1992
t = 5 years
y = 130 stamps
130 = 15*5 + C
by solving we find:
C = 55
click here to see the step by step solution of the equation:
the equation is:
y = 15t + 55