To find an equation relating T, the total amount saved, to N, the number of months, we need to add up the savings from both plans for each month:
T = A + B
Substituting the given expressions for A and B, we get:
T = (135N + 650) + (385N)
Simplifying and combining like terms, we get:
T = 520N + 650
Therefore, the equation relating T to N is T = 520N + 650.